[meteorite-list] Meteorite market talk on radio
Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Paper on preliminary orbit reconstruction of Chelyabinsk
Dear List I don't know if that link was already submitted here. Available on Cornell University website: http://arxiv.org/abs/1302.5377 Have a great day Michael B. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteorite Picture of the Day
Today's Meteorite Picture of the Day: Canyon Diablo (graphite-iron nodule) Contributed by: Paul Swartz http://www.tucsonmeteorites.com/mpod.asp __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Oriented Meteorites?
Hello Brandon, All, Oriented typically means that it is evident that a stone attained stable flight for at least the later portion of a given meteorite's ablative time spent falling to Earth. However, this sort of thing can be somewhat subjective, and it is a greyscale ranging from not at all oriented to very much so. Not so much [shield-shaped, minor froth on trailing face]: http://www.fallsandfinds.com/attachments/Image/Katol/complete/72.678/DSCN2719.jpeg http://www.fallsandfinds.com/attachments/Image/Katol/complete/72.678/DSCN2717.jpeg http://www.fallsandfinds.com/attachments/Image/Katol/complete/72.678/DSCN2714.jpeg Very much so: http://www.fallsandfinds.com/page9.php Generally, if a meteorite's crust shows flow-lines, I'll call it flight-marked. If it has a shape that denotes stable aerodynamic flight, then it's at least somewhat oriented. But many sellers don't seem to be able to tell the difference between oriented meteorites and: 1) Broken stones, especially if sand-blasted. If you take a round, fusion-crusted stone and break it in half, you get a heat-shield shape. But not an oriented stone. Especially common with NWA's. Corner chips off of larger stones often exhibit convex surface of crust and concave broken faces. 2) Fusion crusted stones that show no sign of orientation, but are shaped kind of like a heat-shield. Similar to above, but atmospheric break. The broken face fuses over, and an oriented shape results. But, no flow lines or evidence of lipping or thicker crust on trailing face of stone. 3) Stones that show vague traces of orientation, if any. Sometimes, a dealer calls a meteorite oriented and...I just don't get it. Not much else to say...it really is a greyscale, and, while I wouldn't call orientation subjective, someone else might deem flow-lines enough evidence to call something oriented, regardless of shape. Regards, Jason From: Brandon D. b1dunov...@aol.com Date: Thu, Feb 28, 2013 at 6:04 PM Subject: [meteorite-list] Oriented Meteorites? To: meteorite-list@meteoritecentral.com Hello Everyone, I have a question I'm sure can be answered here to my satisfaction. What defines an Oriented meteorite? I've noticed a trend starting where people have begun calling any meteorite with a rounded edge oriented or slightly oriented. What truly defines an oriented meteorite? I have dozens of shields with radial flowlines and bullet shaped stones and irons, so I see orientation, but what's the true criteria? Thank you ahead for any replies. Best, Brandon D. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] sharp protrusion from an iron meteorite
Hello Mike, All, Good catch. Uruacu's something else, while Baygorria is Campo, along with Las Palmas and a few other newbies supposedly from...other places. Gotta love globalization... Jason On Thu, Feb 28, 2013 at 10:05 PM, Michael Farmer m...@meteoriteguy.com wrote: Uruacu could hardly be more different than Campo. Jason, are you confusing Baygorria with Uruacu? I saw Adam mention Baygorria (which is a total scam to claim campo under another name). Uruacu from Brazil is an extremely stable iron. It is old, but amazingly when cut is perfect and so have yet to see a piece that rusts on a cut surface. Michael Farmer Sent from my iPhone On Feb 28, 2013, at 11:31 PM, jason utas jasonu...@gmail.com wrote: Hello Adam, All, Actually, Uruacu does appear to be distinct from Campo del Cielo. Uruacu appears to be a much older meteorite that has weathered in different conditions, and many individuals show cohenite when cut -- a mineral I have never seen in Campo del Cielo. Generally speaking, Campos run the full range from freshly-fusion crusted to rusty lumps, and everything in-between. But, Campo fell within the past ~5,000 years, so we're talking about rapid weathering in a wet environment (also why it's a ruster). Uruacu fell in a drier area, and most individuals exhibit a much more uniform covering of shale that does not readily flake off due to rusting. They seem to have fallen much longer ago, and are generally more weathered due to the fact that they've been around for longer. Uruacu generally resists rusting better. It would be like comparing Sikhote Alin to Henbury. No Henburies I know of rust, but, by and large, they're not as fresh as most Sikhotes. But some Sikhotes appear to have fallen into swampy areas and look pretty bad -- and rust. It's hard to mix the two up. The trouble is that I've also seen Campos sold as Uruacu, which complicates things. Uruacu is a very old fall. Even some reputable dealers have been selling specimens of new Campo (crust, regmaglypts) as Uruacu. Very different. I assume this is due to dishonest suppliers. There's a stunning, fairly large Uruacu for sale at the moment. Not mine, but I wonder if this will bring it out of the woodwork. Regards, Jason From: Adam Hupe raremeteori...@yahoo.com Date: Wed, Feb 27, 2013 at 2:59 PM Subject: Re: [meteorite-list] sharp protrusion from an iron meteorite To: Adam meteorite-list@meteoritecentral.com Isn't Baygorria another meteorite with a fake provenance? Basically a cleaned up Campo with a delaminated section protruding after a not-so-careful makeover. I would just tell him to seek first aid so he doesn't catch the dreaded Lawrencite disease. Adam - Original Message - From: Randy Korotev koro...@wustl.edu To: meteorite-list@meteoritecentral.com Cc: Sent: Wednesday, February 27, 2013 2:41 PM Subject: [meteorite-list] sharp protrusion from an iron meteorite I recieved a well prepared letter from a fellow with a question that I can't begin to answer. Maybe someone on the list has seen this kind of thing before. He bought a Baygorria (Iron, IAB complex) from a dealer 3 years ago. He picked it up recently to find a metal protrusion sticking out of the thing that was sharp enough to prick his thumb. Here's a jpg of his scanned photo. http://meteorites.wustl.edu/baygorria.jpg What's happened here? Randy Korotev St. Louis __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] sharp protrusion from an iron meteorite
Uruacu could hardly be more different than Campo. Jason, are you confusing Baygorria with Uruacu? I saw Adam mention Baygorria (which is a total scam to claim campo under another name). Uruacu from Brazil is an extremely stable iron. It is old, but amazingly when cut is perfect and so have yet to see a piece that rusts on a cut surface. Michael Farmer Sent from my iPhone On Feb 28, 2013, at 11:31 PM, jason utas jasonu...@gmail.com wrote: Hello Adam, All, Actually, Uruacu does appear to be distinct from Campo del Cielo. Uruacu appears to be a much older meteorite that has weathered in different conditions, and many individuals show cohenite when cut -- a mineral I have never seen in Campo del Cielo. Generally speaking, Campos run the full range from freshly-fusion crusted to rusty lumps, and everything in-between. But, Campo fell within the past ~5,000 years, so we're talking about rapid weathering in a wet environment (also why it's a ruster). Uruacu fell in a drier area, and most individuals exhibit a much more uniform covering of shale that does not readily flake off due to rusting. They seem to have fallen much longer ago, and are generally more weathered due to the fact that they've been around for longer. Uruacu generally resists rusting better. It would be like comparing Sikhote Alin to Henbury. No Henburies I know of rust, but, by and large, they're not as fresh as most Sikhotes. But some Sikhotes appear to have fallen into swampy areas and look pretty bad -- and rust. It's hard to mix the two up. The trouble is that I've also seen Campos sold as Uruacu, which complicates things. Uruacu is a very old fall. Even some reputable dealers have been selling specimens of new Campo (crust, regmaglypts) as Uruacu. Very different. I assume this is due to dishonest suppliers. There's a stunning, fairly large Uruacu for sale at the moment. Not mine, but I wonder if this will bring it out of the woodwork. Regards, Jason From: Adam Hupe raremeteori...@yahoo.com Date: Wed, Feb 27, 2013 at 2:59 PM Subject: Re: [meteorite-list] sharp protrusion from an iron meteorite To: Adam meteorite-list@meteoritecentral.com Isn't Baygorria another meteorite with a fake provenance? Basically a cleaned up Campo with a delaminated section protruding after a not-so-careful makeover. I would just tell him to seek first aid so he doesn't catch the dreaded Lawrencite disease. Adam - Original Message - From: Randy Korotev koro...@wustl.edu To: meteorite-list@meteoritecentral.com Cc: Sent: Wednesday, February 27, 2013 2:41 PM Subject: [meteorite-list] sharp protrusion from an iron meteorite I recieved a well prepared letter from a fellow with a question that I can't begin to answer. Maybe someone on the list has seen this kind of thing before. He bought a Baygorria (Iron, IAB complex) from a dealer 3 years ago. He picked it up recently to find a metal protrusion sticking out of the thing that was sharp enough to prick his thumb. Here's a jpg of his scanned photo. http://meteorites.wustl.edu/baygorria.jpg What's happened here? Randy Korotev St. Louis __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] 3rd Workshop on Binaries in the Solar System
http://www.boulder.swri.edu/binaries3-mtg/ 3rd Workshop on Binaries in the Solar System June 30 - July 2, 2013 West Coast of the Big Island, Hawaii The goal of the workshop is to bring together various ideas on detection, characterization, and formation of binary and multiple objects among NEO, main-belt, Trojan and TNO populations. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] 2012 DA14 Family?
Well, broadly, DA14 was an Apollo, perturbed into an Aten by its recent Earth encounter. Those categories are determined by orbit, not composition. These orbital categorizations are not sufficient to tie any asteroids to particular parents still in main belt orbits. Spectrally, DA14 is an L-type, which I don't think is sufficient information to make any association to an existing potential parent asteroid. Chris *** Chris L Peterson Cloudbait Observatory http://www.cloudbait.com On 3/1/2013 8:59 AM, MEM wrote: Chris or Others? Has a family or possible parent asteroid been identified for 2012 DA14 ? Or is it truly a lurker from parts unknown? Elton __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite market talk on radio
Who is Bob Hazen? Do you mean Haag? Michael Farmer Sent from my iPhone On Mar 1, 2013, at 10:39 AM, SatWatch.org cont...@satwatch.org wrote: Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite market talk on radio
This talk turned me off from the second the interviewer claimed the Sahara was a black market. I would have ended the interview right then and there. Doesn't the media research anything anymore? When it comes to integrity, a modern journalist might ask What are you talking about, I have never heard of such a thing? Adam From: SatWatch.org cont...@satwatch.org To: meteorite-list@meteoritecentral.com meteorite-list@meteoritecentral.com Sent: Friday, March 1, 2013 7:39 AM Subject: [meteorite-list] Meteorite market talk on radio Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] sharp protrusion from an iron meteorite
Sorry Mike, I'll have to disagree with you. Uruacu is a ruster. And I have had plenty of pieces, very carefully professionally prepared pieces to prove it. Whole individuals and cut pieces. Anne M. Black www.IMPACTIKA.com impact...@aol.com -Original Message- From: Michael Farmer m...@meteoriteguy.com To: jason utas jasonu...@gmail.com Cc: Meteorite-list meteorite-list@meteoritecentral.com Sent: Fri, Mar 1, 2013 8:43 am Subject: Re: [meteorite-list] sharp protrusion from an iron meteorite Uruacu could hardly be more different than Campo. Jason, are you confusing Baygorria with Uruacu? I saw Adam mention Baygorria (which is a total scam to claim campo under another name). Uruacu from Brazil is an extremely stable iron. It is old, but amazingly when cut is perfect and so have yet to see a piece that rusts on a cut surface. Michael Farmer __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite market talk on radio
Another idiot who reads the NewYork Times! For newbies or as a reminder, please read: http://imca.cc/index.php?option=com_wrapperItemid=192 Thanks Anne M. Black www.IMPACTIKA.com impact...@aol.com -Original Message- From: Adam Hupe raremeteori...@yahoo.com To: Adam meteorite-list@meteoritecentral.com Sent: Fri, Mar 1, 2013 10:54 am Subject: Re: [meteorite-list] Meteorite market talk on radio This talk turned me off from the second the interviewer claimed the Sahara was a black market. I would have ended the interview right then and there. Doesn't the media research anything anymore? When it comes to integrity, a modern journalist might ask What are you talking about, I have never heard of such a thing? Adam From: SatWatch.org cont...@satwatch.org To: meteorite-list@meteoritecentral.com meteorite-list@meteoritecentral.com Sent: Friday, March 1, 2013 7:39 AM Subject: [meteorite-list] Meteorite market talk on radio Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite market talk on radio
Adam is right. Shut down the interview and walk out. That whole black market propaganda is getting very tired and old now. It's utter rubbish. Complete and total baloney. And anyone who knows a single thing about how the market operates, knows that there is no black market for meteorites. Black markets, by definition, only arise when a commodity is completely outlawed or heavily regulated. Meteorites are sold legally on an open market, that is the exact opposite of a black market. Again, there may be a few bad apples in the meteorite world, but their numbers pale in comparison to the problems seen in other fields or hobbies. Which brings me to another thing - the entire meteorite market is not big enough to sustain a lucrative black market if it tried. There just aren't enough people and money invested because meteorites are still a niche thing and small potatoes next to the diamond trade or gold trade. People keep insisting that some thriving black market of meteorites is going on, well, somebody please point me to it, because I am curious to see it. I typed meteorite black market into Google Earth, and it sent me to a vacant field outside Walla Walla Washington. Do I need a secret knock or handshake to get in? Best regards, MikeG -- - Web - http://www.galactic-stone.com Facebook - http://www.facebook.com/galacticstone Twitter - http://twitter.com/GalacticStone Pinterest - http://pinterest.com/galacticstone RSS - http://www.galactic-stone.com/rss/126516 - On 3/1/13, Adam Hupe raremeteori...@yahoo.com wrote: This talk turned me off from the second the interviewer claimed the Sahara was a black market. I would have ended the interview right then and there. Doesn't the media research anything anymore? When it comes to integrity, a modern journalist might ask What are you talking about, I have never heard of such a thing? Adam From: SatWatch.org cont...@satwatch.org To: meteorite-list@meteoritecentral.com meteorite-list@meteoritecentral.com Sent: Friday, March 1, 2013 7:39 AM Subject: [meteorite-list] Meteorite market talk on radio Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Odyssey THEMIS Images: February 25 - March 1, 2013
MARS ODYSSEY THEMIS IMAGES February 25 - March 1, 2013 o Arsia Mons (25 February 2013) http://themis.asu.edu/node/6100 o Hussey Crater Dunes (26 February 2013) http://themis.asu.edu/node/6101 o Faults (27 February 2013) http://themis.asu.edu/node/6102 o Windstreaks (28 February 2013) http://themis.asu.edu/node/6103 o Landslides (01 March 2013) http://themis.asu.edu/node/6104 All of the THEMIS images are archived here: http://themis.asu.edu/latest.html NASA's Jet Propulsion Laboratory manages the 2001 Mars Odyssey mission for NASA's Office of Space Science, Washington, D.C. The Thermal Emission Imaging System (THEMIS) was developed by Arizona State University, Tempe, in co.oration with Raytheon Santa Barbara Remote Sensing. The THEMIS investigation is led by Dr. Philip Christensen at Arizona State University. Lockheed Martin Astronautics, Denver, is the prime contractor for the Odyssey project, and developed and built the orbiter. Mission operations are conducted jointly from Lockheed Martin and from JPL, a division of the California Institute of Technology in Pasadena. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Dawn Journal - February 28, 2013
http://dawn.jpl.nasa.gov/mission/journal_02_28_13.asp Dawn Journal Dr. Marc Rayman February 28, 2013 Dear Impordawnt Readers, The indefatigable Dawn spacecraft is continuing to forge through the main asteroid belt, gently thrusting with its ion propulsion system. As it gradually changes its orbit around the sun, the distance to dwarf planet Ceres slowly shrinks. The pertinacious probe will arrive there in 2015 to explore the largest body between the sun and Neptune that has not yet been glimpsed by a visitor from Earth. Meanwhile, Vesta, the fascinating alien world Dawn revealed in 2011 and 2012, grows ever more distant. The mini-planet it orbited and studied in such detail now appears only as a pinpoint of light 15 times farther from Dawn than the moon is from Earth. Climbing through the solar system atop a column of blue-green xenon ions, Dawn has a great deal of powered flight ahead in order to match orbits with faraway Ceres. Nevertheless, it has shown quite admirably that it is up to the task. The craft has spent more time thrusting and has changed its orbit under its own power more than any other ship from Earth. While most of the next two years will be devoted to still more thrusting, the ambitious adventurer has already accomplished much more than it has left to do. And now it is passing an interesting milestone on its interplanetary trek. With all of the thrusting Dawn has completed, it has now changed its speed by 7.74 kilometers per second (17,300 mph), and the value grows as the ion thrusting continues. For space enthusiasts from Earth, that is a special speed, known as orbital velocity. Many satellites, including the International Space Station, travel at about that velocity in their orbits. So does this mean that Dawn has only now achieved the velocity necessary to orbit Earth? The short answer is no. The longer answer constitutes the remainder of this log. We have discussed some of these principles before, but they are counterintuitive and questions continue to arise. Rather than send our readers on a trajectory through the history of these logs even more complicated than Dawn's flight through the asteroid belt, we will revisit a few of the ideas here. (After substantial introspection, your correspondent granted and was granted permission to reuse not only past text but also future text.) While marking Dawn's progress in terms of its speed is a convenient description of the effectiveness of its maneuvering, it is not truly a measure of how fast it is moving. Rather, it is a measure of how fast it would be moving under very special (and unrealistic) circumstances. To understand this, we need to look at the nature of orbits in general and Dawn's interplanetary trajectory in particular. The overwhelming majority of craft humans have sent into space have remained in the vicinity of Earth, accompanying that planet on its annual revolutions around the sun. All satellites of Earth (including the moon) remain bound to it by its gravity. (Similarly, Dawn spent much of 2011 and 2012 as a satellite of distant Vesta, locked in the massive body's gravitational grip.) As fast as satellites seem to travel compared to terrestrial residents, from the larger solar system perspective, their incessant circling of Earth means their paths through space are not very different from Earth's itself. Consider the path of a car racing around a long track. If a fly buzzes around inside the car, to the driver it may seem to be moving fast, but if someone watching the car from a distance plotted the fly's path, on average it would be pretty much like the car's. Everything on the planet and orbiting it travels around the sun at an average of 30 kilometers per second (67,000 mph), completing one full solar orbit every year. To undertake its interplanetary journey and travel elsewhere in the solar system, Dawn needed to break free of Earth's grasp, and that was accomplished by the rocket that carried it to space more than five years ago. Dawn and its erstwhile home went their separate ways, and the sun became the natural reference for the spacecraft's position and speed on its voyage in deep space. Despite the enormous push the Delta II rocket delivered (with affection!) to Dawn, the spacecraft still did not have nearly enough energy to escape from the powerful sun. So, being a responsible resident of the solar system, Dawn has remained faithfully in orbit around the sun, just as Earth and the rest of the planets, asteroids, comets, and other members of the star's entourage have. Whether it is for a spacecraft or moon orbiting a planet, a planet or Dawn orbiting the sun, the sun orbiting the Milky Way galaxy, or the Milky Way galaxy orbiting the Virgo supercluster of galaxies (home to a sizeable fraction of our readership), any orbit is the perfect balance between the inward tug of gravity and the inexorable tendency of objects to travel in a straight path. If you attach a weight to a string and swing it
[meteorite-list] Additional Details on the Large Fireball Event over Russia on Feb 15, 2013
http://neo.jpl.nasa.gov/news/fireball_130301.html Additional Details on the Large Fireball Event over Russia on Feb. 15, 2013 Don Yeomans Paul Chodas NASA/JPL Near-Earth Object Program Office March 1, 2013 The large fireball (technically, a superbolide) observed on the morning of February 15, 2013 in the skies near Chelyabinsk, Russia, was caused by a relatively small asteroid approximately 17 to 20 meters in size, entering the Earth's atmosphere at high speed and a shallow angle. In doing so it released a tremendous amount of energy, fragmented at high altitude, and produced a shower of pieces of various sizes that fell to the ground as meteorites. The fireball was observed not only by video cameras and low frequency infrasound detectors, but also by U.S. Government sensors. As a result, the details of the impact have become clearer. There is no connection between the Russian fireball event and the close approach of asteroid 2012 DA14, which occurred just over 16 hours later. New Fireball Data U.S. Government sensor data on fireballs are now reported on the NASA Near-Earth Object Program Office website at http://neo.jpl.nasa.gov/fireballs The February 15th event is the first entry on this new site, and it provides the following information about the fireball: * Date and time of maximum brightness: 15 Feb. 2013/03:20:33 GMT * Geographic location of maximum brightness: Latitude: 54.8 deg. N Longitude: 61.1 deg. E * Altitude of maximum brightness: 23.3 km (14.5 miles) * Velocity at peak brightness: 18.6 km/s (11.6 miles/s) * Approximate total radiated energy of fireball: 3.75 x 10^14 Joules. This is the equivalent of about 90 kilotons (kt) of TNT explosives, but it does not represent the total impact energy (see note below). * Approximate total impact energy of the fireball in kilotons of TNT explosives (the energy parameter usually quoted for a fireball): 440 kt. Note that the total energy of a fireball event is several times larger than the observed total radiated energy. The JPL fireballs website uses the following empirical formula derived by Peter Brown and colleagues to convert the optical radiant energy Eo into an estimate of the total impact energy E (see: Brown et al., The flux of small near-Earth objects colliding with the Earth. Nature, vol. 420, 21 Nov. 2002, pp. 294-296):. E = 8.2508 x E_o ^0.885 During the atmospheric entry phase, an impacting object is both slowed and heated by atmospheric friction. In front of it, a bow shock develops where atmospheric gases are compressed and heated. Some of this energy is radiated to the object causing it to ablate, and in most cases, to break apart. Fragmentation increases the amount of atmosphere intercepted and so enhances ablation and atmospheric braking. The object catastrophically disrupts when the force from the unequal pressures on the front and back sides exceeds its tensile strength. This was an extraordinarily large fireball, the most energetic impact event recognized since the 1908 Tunguska blast in Russian Siberia. The meteorites recovered from the Chelyabinsk fireball are reported to be ordinary chondrites, which have a typical density of about 3.6 g/cm^3. Given the total energy of about 440 kt, the approximate effective diameter of the asteroid would be about 18 meters, and its mass would be roughly 11,000 tons. Note that these estimates of total energy, diameter and mass are very approximate. Where Did the Chelyabinsk Impactor Come From? An approximate path for the Chelyabinsk impactor can be calculated from the newly released fireball data. (A similar calculation can be made from analysis of video records of the event; both methods yield similar results.) The first diagram shows the ground track of the impactor over the last minute or so before impact. The altitudes along this ground track have been called out and the asterisk on the path indicates the point of peak brightness, just south of Chelyabinsk. [Diagram 1: Ground track of impactor showing altitude values along the track] The second diagram shows the impactor's final trajectory over the last several hours, as it approached the Earth along a direction that remained within 15 degrees of the direction of the Sun. Asteroid detection telescopes cannot scan regions of the sky this close to the Sun. [Diagram 2: Approximate final trajectory of impactor] The third diagram shows the orbit of the impactor about the Sun. The orbit reaches from the asteroid belt at its farthest from the Sun to near the orbit of Venus at its closest to the Sun. The impactor had likely been following this orbit for many thousands of years, crossing the Earth's orbit every time on its outbound leg. [Diagram 3: Heliocentric orbit of asteroid that impacted near Chelyabinsk Russia] Was the Chelyabinsk Fireball Related to the Close Approach of Asteroid 2012 DA14? Asteroid 2012 DA14 made a very close flyby of the Earth
[meteorite-list] Russian Scientists Reveal Minerals Contained in Chebarkul Meteorite
http://rbth.ru/news/2013/03/01/russian_scientists_revealed_minerals_contained_in_chebarkul_meteorite_23412.html Russian scientists revealed minerals contained in Chebarkul meteorite Interfax News Agency March 1, 2013 Experts from the Institute of Geology and Mineralogy of the Russian Academy of Sciences have studied two pieces of the meteor that exploded over Chelyabinsk on Feb. 15. The studies have determined that the main minerals of the pieces are the silicates olivine and orthopyroxene. The pieces also contain ferric sulphide, nickel sulphide, native metals such as nickel meteor iron (kamacite and taenite), chromite, clinopyroxene, plagioclase, and feldspathic glass. The geologists said there is a probability that some iron phosphide may have been found among the elements. The scientists also said they have received information on the presence of volatile components in the meteor, the report says. This tentative information is very significant for the reconstruction of the early stages of development of the solar system. It is believed that meteors are the substance of which planets were formed, the report says. The meteor pieces were forwarded to the experts by teachers from Novosibirsk who were in the village of Emanzhelinka, Chelyabinsk region, when the meteor landed. According to earlier reports, a meteor exploded over the Chelyabinsk region on Feb. 15. The shock wave broke windows in buildings and destroyed the roof of buildings, both residential and industrial. Over 1,200 people were injured and the total damage done by the accident is estimated at some 1 billion. Experts believe this accident was impossible to predict. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Mars Rover Opportunity Update: February 21-26, 2013
http://marsrovers.jpl.nasa.gov/mission/status.html#opportunity OPPORTUNITY UPDATE: Short Bump Gets Robotic Arm Closer to Rock Target - sols 3228-3233, Feb. 21, 2013-Feb. 26, 2013: Opportunity is conducting the post-walkabout in-situ (contact) science campaign at different locations around the inboard edge of 'Cape York' on the rim of Endeavour Crater. On Sol 3230 (Feb. 23, 2013), with approximately 16 feet (5 meters) of motion the rover attempted to scuff (drive over) the surface target, named 'Boxwork.' However, due to high slip the rover missed scuffing the intended target. On Sol 3233 (Feb. 26, 2013), Opportunity performed a 4 foot (1.3 meter) bump to set up for some in-situ work with a target called 'Lihir' in the area that was to be scuffed. In-situ measurements are planned with the instruments on the end of the robotic arm. No 'amnesia' events with the Flash file system have occurred since Sol 3183 (Jan. 6, 2013), and the rover is otherwise in good health. As of Sol 3233 (Feb. 26, 2013), the solar array energy production was 510 watt-hours with an atmospheric opacity (Tau) of 0.817 and a solar array dust factor of 0.594. Total odometry as is 21.11 miles (35,582.33 meters). __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Comet Hartley 2: The 'Weird' Comet
http://www.space.com/20033-comet-hartley-2.html?cmpid=514648 Hartley 2: The 'Weird' Comet Elizabeth Howell space.com March 1, 2013 Comet Hartley 2, officially known as 103P/Hartley, visits the inner solar system about every 6.5 years. The comet was discovered by an amateur astronomer in 1986 and received a visit from a NASA mission, Epoxi, in 2010. It is expected to return in April 2017. Although the comet is a frequent visitor to the sun, it's still a very active small body. NASA has called Hartley 2 a weird little comet, and one NASA astronomer characterized Hartley 2 as a hyperactive little comet, spewing out more water than most other comets its size. Scientists studying the small comet have raised the possibility that more comets behave the same way, especially if they carry plenty of carbon dioxide or monoxide in their composition. Hartley 2's visit by Epoxi also revealed some strange scientific discoveries, such as glittering blocks on either end of the comet. Caught by quality control Hartley 2 is named after its discoverer, Malcolm Hartley, an amateur astronomer working for the Siding Spring Observatory in New South Wales, Australia. He has held several roles at the facility over the years, but in March 1986 he was a quality controller examining the accuracy of images taken by a Schmidt telescope on site. On March 16 of that year, he saw a strange smudge on a photographic glass plate. Back then, the observations came in as negatives - stars and other objects in the sky appeared black on a clear background, said Hartley in an interview published by NASA in 2011. I noticed a dark haze around a trail. Trails indicate something that is travelling fast through the sky, but asteroids don't have a haze. So I thought it might be a comet. His find was confirmed by the International Astronomical Union's minor planet center a few days after the discovery. Hartley actually went on to discover at least 10 more comets during his career, until Siding Spring changed the Schmidt telescope he used to perform spectroscopy in 2002. Hartley's namesake returns to the inner solar system near Earth about once every 6.5 years. Although it's nowhere near as bright as say, Halley's Comet at its finest, Hartley 2's frequent return makes it a valuable object for astronomers seeking to understand how the sun alters these dirty snowballs during repeat trips near the sun. A last-minute mission switch Interest in Comet Hartley 2 picked up in 2007, when NASA made a last-minute decision to divert the Deep Impact mission in the comet's direction. The agency originally planned to target Comet Boethin, but that periodic comet vanished from view before Deep Impact could get there. We were confident we could find the comet, and we were astonished when it wasn't there, stated the University of Hawaii's Karen Meech, one of the mission's co-investigators, in a 2007 press release. The scientists guessed that the comet broke up into pieces too small to see from Earth. While Hartley 2 was a promising target, NASA said the drawback to visiting that comet over Boethin was it would take two years longer to bring the spacecraft close by. Because instruments can degrade over time, this initially made Boethin the primary choice. Deep Impact had already launched in 2005 to first swing by Comet Tempel and eject an impactor into the comet before heading by Earth again in 2007, redirecting its trajectory and launching towards Hartley 2. The mission's change to Hartley 2 renewed scientific interest in the comet. Other observatories performed more detailed studies of Hartley 2, including the orbiting NASA Spitzer Space Telescope. Researchers using the observatory examined Hartley 2's nucleus and rate of mass loss that occurs every time it passes near the sun. They estimated that Hartley 2 could last about 700 more years about 100 more trips around the sun - before it breaks up. Carbon dioxide and 'glittering blocks' Before reaching Hartley 2, Deep Impact was renamed Epoxi to reflect a search for Earth-size exoplanets around five stars. It took three laps of the sun before Epoxi could get close to Hartley - a trip of 1.6 billion miles (about 18 times the distance between the Earth and the sun.) Epoxi made its closest approach to Hartley 2 in November 2010, looking to understand more about the comet's interior. It passed as close as 431 miles (694 kilometers) from the comet's surface. Rather than sending a probe into Hartley 2, Epoxi monitored poofs of gas emanating from the comet's surface and surrounding it. It also hunted for water ice on the comet. Studying the oddball comet up close revealed that outbursts on the comet do not happen uniformly. Jets from the comet, powered by carbon dioxide, were more populous on either side of Hartley 2 than at the middle. The waist of the comet instead had jets with water vapor, with only a little carbon dioxide
Re: [meteorite-list] 2012 DA14 Family?
Hi Elton: Apollos and Atens are technically groups of asteroids grouped by their orbital parameters, only: An Apollo asteroid has a mean distance from the Sun of more than 1.0 AU and a perihelion (closest to the Sun) of less than 1.017 AU (Earth's aphelion or farthest distance from the Sun), so is an Earth crosser. An Aten asteroid has a mean distance from the Sun that is less than 1.0 AU. There is a subclass of Atens that are wholly within the orbit of the Earth called the Apohele asteroids (or Atira asteroids, named for the first CONFIRMED member of this group). I think that the aphelion has to be less than 0.983, the perihelion of the Earth. So, in neither case does the group imply anything about composition or place of origin (probably the asteroid belt as it is unlikely that anything big enough to be observed in space would have come from the Moon or Mars!). Larry Well, broadly, DA14 was an Apollo, perturbed into an Aten by its recent Earth encounter. Those categories are determined by orbit, not composition. These orbital categorizations are not sufficient to tie any asteroids to particular parents still in main belt orbits. Spectrally, DA14 is an L-type, which I don't think is sufficient information to make any association to an existing potential parent asteroid. Chris *** Chris L Peterson Cloudbait Observatory http://www.cloudbait.com On 3/1/2013 8:59 AM, MEM wrote: Chris or Others? Has a family or possible parent asteroid been identified for 2012 DA14 ? Or is it truly a lurker from parts unknown? Elton __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Oriented Meteorites?
Hi Brandon and all, I will soon have a book out addressing this very issue. Michael On 2/28/13 6:04 PM, Brandon D. b1dunov...@aol.com wrote: Hello Everyone, I have a question I'm sure can be answered here to my satisfaction. What defines an Oriented meteorite? I've noticed a trend starting where people have begun calling any meteorite with a rounded edge oriented or slightly oriented. What truly defines an oriented meteorite? I have dozens of shields with radial flowlines and bullet shaped stones and irons, so I see orientation, but what's the true criteria? Thank you ahead for any replies. Best, Brandon D. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Baygorria vs Campo
Hi Jason, Mike and all, Baygorria is NOT Campo. Here is the story: E.T. Recovered Baygorria. However, while he was in The midst of cutting, etching distributing it, another dealer distributed dozens of slices of Campo AS BAYGORRIA to numerous institutions and individuals. This ultimately lead to multiple institutions stating that Baygorria was not a separate fall, but merely Campo sold under a different name. Ask E.T. About this. Michael On 2/28/13 10:24 PM, jason utas jasonu...@gmail.com wrote: Hello Mike, All, Good catch. Uruacu's something else, while Baygorria is Campo, along with Las Palmas and a few other newbies supposedly from...other places. Gotta love globalization... Jason On Thu, Feb 28, 2013 at 10:05 PM, Michael Farmer m...@meteoriteguy.com wrote: Uruacu could hardly be more different than Campo. Jason, are you confusing Baygorria with Uruacu? I saw Adam mention Baygorria (which is a total scam to claim campo under another name). Uruacu from Brazil is an extremely stable iron. It is old, but amazingly when cut is perfect and so have yet to see a piece that rusts on a cut surface. Michael Farmer Sent from my iPhone On Feb 28, 2013, at 11:31 PM, jason utas jasonu...@gmail.com wrote: Hello Adam, All, Actually, Uruacu does appear to be distinct from Campo del Cielo. Uruacu appears to be a much older meteorite that has weathered in different conditions, and many individuals show cohenite when cut -- a mineral I have never seen in Campo del Cielo. Generally speaking, Campos run the full range from freshly-fusion crusted to rusty lumps, and everything in-between. But, Campo fell within the past ~5,000 years, so we're talking about rapid weathering in a wet environment (also why it's a ruster). Uruacu fell in a drier area, and most individuals exhibit a much more uniform covering of shale that does not readily flake off due to rusting. They seem to have fallen much longer ago, and are generally more weathered due to the fact that they've been around for longer. Uruacu generally resists rusting better. It would be like comparing Sikhote Alin to Henbury. No Henburies I know of rust, but, by and large, they're not as fresh as most Sikhotes. But some Sikhotes appear to have fallen into swampy areas and look pretty bad -- and rust. It's hard to mix the two up. The trouble is that I've also seen Campos sold as Uruacu, which complicates things. Uruacu is a very old fall. Even some reputable dealers have been selling specimens of new Campo (crust, regmaglypts) as Uruacu. Very different. I assume this is due to dishonest suppliers. There's a stunning, fairly large Uruacu for sale at the moment. Not mine, but I wonder if this will bring it out of the woodwork. Regards, Jason From: Adam Hupe raremeteori...@yahoo.com Date: Wed, Feb 27, 2013 at 2:59 PM Subject: Re: [meteorite-list] sharp protrusion from an iron meteorite To: Adam meteorite-list@meteoritecentral.com Isn't Baygorria another meteorite with a fake provenance? Basically a cleaned up Campo with a delaminated section protruding after a not-so-careful makeover. I would just tell him to seek first aid so he doesn't catch the dreaded Lawrencite disease. Adam - Original Message - From: Randy Korotev koro...@wustl.edu To: meteorite-list@meteoritecentral.com Cc: Sent: Wednesday, February 27, 2013 2:41 PM Subject: [meteorite-list] sharp protrusion from an iron meteorite I recieved a well prepared letter from a fellow with a question that I can't begin to answer. Maybe someone on the list has seen this kind of thing before. He bought a Baygorria (Iron, IAB complex) from a dealer 3 years ago. He picked it up recently to find a metal protrusion sticking out of the thing that was sharp enough to prick his thumb. Here's a jpg of his scanned photo. http://meteorites.wustl.edu/baygorria.jpg What's happened here? Randy Korotev St. Louis __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite market talk on radio
Ladies and Gentlemen, I know this is going to sound cynical and pessimistic, but the truth is the truth. NO member of the media who contacts you has your interest, or the activity you engage in at heart. They care less, about you and what effect their writings may have on you, or your future activities. It's all about them and how much recognition and approval they can get by delivering a sensational story, even if they have to manipulate you into making innocent statements and then edit your comments. My advice is that unless your a pro at giving press briefings, interviews and distributing talking points. Don't walk, but run to the nearest exit. Can anyone argue that we are better off as a result of three years hyping the rarity and value of meteorites on cable TV and in the nation's print media? Regards, Guido -Original Message- From: Anne Black impact...@aol.com Sent: Mar 1, 2013 10:09 AM To: raremeteori...@yahoo.com, meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Meteorite market talk on radio Another idiot who reads the NewYork Times! For newbies or as a reminder, please read: http://imca.cc/index.php?option=com_wrapperItemid=192 Thanks Anne M. Black www.IMPACTIKA.com impact...@aol.com -Original Message- From: Adam Hupe raremeteori...@yahoo.com To: Adam meteorite-list@meteoritecentral.com Sent: Fri, Mar 1, 2013 10:54 am Subject: Re: [meteorite-list] Meteorite market talk on radio This talk turned me off from the second the interviewer claimed the Sahara was a black market. I would have ended the interview right then and there. Doesn't the media research anything anymore? When it comes to integrity, a modern journalist might ask What are you talking about, I have never heard of such a thing? Adam From: SatWatch.org cont...@satwatch.org To: meteorite-list@meteoritecentral.com meteorite-list@meteoritecentral.com Sent: Friday, March 1, 2013 7:39 AM Subject: [meteorite-list] Meteorite market talk on radio Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteorite market talk on radio
By the time a meme makes it to the New York Times, it's too late to stop it. It's now common knowledge among the non-cognescenti that there is a massive worldwide illegal meteorite black market. A perfect example of argumentum ad populum: it must be true because so many believe it. Fifty million Elvis sightings means the King still lives, right? Phil Whitmer Joshua Tree Earth Space Museum __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Month of March 2013 Website Updates now up!
Hi List. My updates for the month of March 2013 are completed. * The Black Hole Mystery Video of the Month Here is something I am sure all of you will enjoy! It is an incredible almost 7 minute video compilation of the Chelyabinsk, Russia event that not only includes video capture of the meteor as it crosses the sky but includes surveillance video showing the fear in people/children as well as actual as it happens destruction caused by the shock wave! You may have seen the other video's but probably not this one! Totally Awesome. http://www.ctreasurescwonders.com/secret_video.html * Also the Flash from the Past Photo of the Month This showing the first primate to reach space! http://www.ctreasurescwonders.com/astro_met_news_back-up.html * The Night Sky this Month for March 2013 is up as well, for those meteorite collectors/astronomers! http://www.ctreasurescwonders.com/menu_1.html * Also check out my Home page so you can watch and or read about the Comet Panstarrs which is visible this month! http://www.ctreasurescwonders.com/index.html * All very educational and for everyone! Hope you all enjoy. Sincerely Don Merchant Founder-Cosmic Treasures Celestial Wonders www.ctreasurescwonders.com IMCA #0960 __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite market talk on radio
Odd, I have has it since I flew to Brazil and bought the second mass from Wilton Carvalhol in 2002, never a speck of rust on many I have cut, Michael Farmer Sent from my iPhone On Mar 1, 2013, at 1:09 PM, Anne Black impact...@aol.com wrote: Another idiot who reads the NewYork Times! For newbies or as a reminder, please read: http://imca.cc/index.php?option=com_wrapperItemid=192 Thanks Anne M. Black www.IMPACTIKA.com impact...@aol.com -Original Message- From: Adam Hupe raremeteori...@yahoo.com To: Adam meteorite-list@meteoritecentral.com Sent: Fri, Mar 1, 2013 10:54 am Subject: Re: [meteorite-list] Meteorite market talk on radio This talk turned me off from the second the interviewer claimed the Sahara was a black market. I would have ended the interview right then and there. Doesn't the media research anything anymore? When it comes to integrity, a modern journalist might ask What are you talking about, I have never heard of such a thing? Adam From: SatWatch.org cont...@satwatch.org To: meteorite-list@meteoritecentral.com meteorite-list@meteoritecentral.com Sent: Friday, March 1, 2013 7:39 AM Subject: [meteorite-list] Meteorite market talk on radio Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite market talk on radio
Why are such people discussing the meteorite market. I doubt any of them know anything about it. I have sold to Carnegie institute many times. They wanted material that only I could provide them. Perhaps They should ask for funding to go get it themselves? Michael Farmer Sent from my iPhone On Mar 1, 2013, at 1:15 PM, Galactic Stone Ironworks meteoritem...@gmail.com wrote: Adam is right. Shut down the interview and walk out. That whole black market propaganda is getting very tired and old now. It's utter rubbish. Complete and total baloney. And anyone who knows a single thing about how the market operates, knows that there is no black market for meteorites. Black markets, by definition, only arise when a commodity is completely outlawed or heavily regulated. Meteorites are sold legally on an open market, that is the exact opposite of a black market. Again, there may be a few bad apples in the meteorite world, but their numbers pale in comparison to the problems seen in other fields or hobbies. Which brings me to another thing - the entire meteorite market is not big enough to sustain a lucrative black market if it tried. There just aren't enough people and money invested because meteorites are still a niche thing and small potatoes next to the diamond trade or gold trade. People keep insisting that some thriving black market of meteorites is going on, well, somebody please point me to it, because I am curious to see it. I typed meteorite black market into Google Earth, and it sent me to a vacant field outside Walla Walla Washington. Do I need a secret knock or handshake to get in? Best regards, MikeG -- - Web - http://www.galactic-stone.com Facebook - http://www.facebook.com/galacticstone Twitter - http://twitter.com/GalacticStone Pinterest - http://pinterest.com/galacticstone RSS - http://www.galactic-stone.com/rss/126516 - On 3/1/13, Adam Hupe raremeteori...@yahoo.com wrote: This talk turned me off from the second the interviewer claimed the Sahara was a black market. I would have ended the interview right then and there. Doesn't the media research anything anymore? When it comes to integrity, a modern journalist might ask What are you talking about, I have never heard of such a thing? Adam From: SatWatch.org cont...@satwatch.org To: meteorite-list@meteoritecentral.com meteorite-list@meteoritecentral.com Sent: Friday, March 1, 2013 7:39 AM Subject: [meteorite-list] Meteorite market talk on radio Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Baygorria vs Campo
I went to Uruaguay, I know a about Baygorria. Sent from my iPhone On Mar 1, 2013, at 2:50 PM, Michael Blood mlbl...@cox.net wrote: Hi Jason, Mike and all, Baygorria is NOT Campo. Here is the story: E.T. Recovered Baygorria. However, while he was in The midst of cutting, etching distributing it, another dealer distributed dozens of slices of Campo AS BAYGORRIA to numerous institutions and individuals. This ultimately lead to multiple institutions stating that Baygorria was not a separate fall, but merely Campo sold under a different name. Ask E.T. About this. Michael On 2/28/13 10:24 PM, jason utas jasonu...@gmail.com wrote: Hello Mike, All, Good catch. Uruacu's something else, while Baygorria is Campo, along with Las Palmas and a few other newbies supposedly from...other places. Gotta love globalization... Jason On Thu, Feb 28, 2013 at 10:05 PM, Michael Farmer m...@meteoriteguy.com wrote: Uruacu could hardly be more different than Campo. Jason, are you confusing Baygorria with Uruacu? I saw Adam mention Baygorria (which is a total scam to claim campo under another name). Uruacu from Brazil is an extremely stable iron. It is old, but amazingly when cut is perfect and so have yet to see a piece that rusts on a cut surface. Michael Farmer Sent from my iPhone On Feb 28, 2013, at 11:31 PM, jason utas jasonu...@gmail.com wrote: Hello Adam, All, Actually, Uruacu does appear to be distinct from Campo del Cielo. Uruacu appears to be a much older meteorite that has weathered in different conditions, and many individuals show cohenite when cut -- a mineral I have never seen in Campo del Cielo. Generally speaking, Campos run the full range from freshly-fusion crusted to rusty lumps, and everything in-between. But, Campo fell within the past ~5,000 years, so we're talking about rapid weathering in a wet environment (also why it's a ruster). Uruacu fell in a drier area, and most individuals exhibit a much more uniform covering of shale that does not readily flake off due to rusting. They seem to have fallen much longer ago, and are generally more weathered due to the fact that they've been around for longer. Uruacu generally resists rusting better. It would be like comparing Sikhote Alin to Henbury. No Henburies I know of rust, but, by and large, they're not as fresh as most Sikhotes. But some Sikhotes appear to have fallen into swampy areas and look pretty bad -- and rust. It's hard to mix the two up. The trouble is that I've also seen Campos sold as Uruacu, which complicates things. Uruacu is a very old fall. Even some reputable dealers have been selling specimens of new Campo (crust, regmaglypts) as Uruacu. Very different. I assume this is due to dishonest suppliers. There's a stunning, fairly large Uruacu for sale at the moment. Not mine, but I wonder if this will bring it out of the woodwork. Regards, Jason From: Adam Hupe raremeteori...@yahoo.com Date: Wed, Feb 27, 2013 at 2:59 PM Subject: Re: [meteorite-list] sharp protrusion from an iron meteorite To: Adam meteorite-list@meteoritecentral.com Isn't Baygorria another meteorite with a fake provenance? Basically a cleaned up Campo with a delaminated section protruding after a not-so-careful makeover. I would just tell him to seek first aid so he doesn't catch the dreaded Lawrencite disease. Adam - Original Message - From: Randy Korotev koro...@wustl.edu To: meteorite-list@meteoritecentral.com Cc: Sent: Wednesday, February 27, 2013 2:41 PM Subject: [meteorite-list] sharp protrusion from an iron meteorite I recieved a well prepared letter from a fellow with a question that I can't begin to answer. Maybe someone on the list has seen this kind of thing before. He bought a Baygorria (Iron, IAB complex) from a dealer 3 years ago. He picked it up recently to find a metal protrusion sticking out of the thing that was sharp enough to prick his thumb. Here's a jpg of his scanned photo. http://meteorites.wustl.edu/baygorria.jpg What's happened here? Randy Korotev St. Louis __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at
[meteorite-list] Meteorite market talk on radio
Folks it's ALL about RATINGS for TV and radio, newspapers, magazines, etc. Remember that. Facts? We don't need no stinking facts!. Regards! Tom __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Meteorite market talk on radio
Guido Asked: Can anyone argue that we are better off as a result of three years hyping the rarity and value of meteorites on cable TV and in the nation's print media? I am beginning to long for the good old days just a decade ago. I have seen over a dozen countries restrict meteorite hunting including the U.S. in the past few years, many farms and ranches are now off limits due to the perception of being treated, fraud is at an all time high and wackos are coming out of the woodwork at an alarming rate. Other than that, we are great shape. Every time a self-proclaimed spokesperson seeking fleeting fame steps up to the plate, the rest of us are left to deal with the aftermath. Happy Hunting, Adam __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Baygorria vs Campo
LOLoud. Jim Strope 421 4th Street Glen Dale, WV. 26038 Sent from my iPad On Mar 1, 2013, at 2:50 PM, Michael Blood mlbl...@cox.net wrote: Hi Jason, Mike and all, Baygorria is NOT Campo. Here is the story: E.T. Recovered Baygorria. However, while he was in The midst of cutting, etching distributing it, another dealer distributed dozens of slices of Campo AS BAYGORRIA to numerous institutions and individuals. This ultimately lead to multiple institutions stating that Baygorria was not a separate fall, but merely Campo sold under a different name. Ask E.T. About this. Michael On 2/28/13 10:24 PM, jason utas jasonu...@gmail.com wrote: Hello Mike, All, Good catch. Uruacu's something else, while Baygorria is Campo, along with Las Palmas and a few other newbies supposedly from...other places. Gotta love globalization... Jason On Thu, Feb 28, 2013 at 10:05 PM, Michael Farmer m...@meteoriteguy.com wrote: Uruacu could hardly be more different than Campo. Jason, are you confusing Baygorria with Uruacu? I saw Adam mention Baygorria (which is a total scam to claim campo under another name). Uruacu from Brazil is an extremely stable iron. It is old, but amazingly when cut is perfect and so have yet to see a piece that rusts on a cut surface. Michael Farmer Sent from my iPhone On Feb 28, 2013, at 11:31 PM, jason utas jasonu...@gmail.com wrote: Hello Adam, All, Actually, Uruacu does appear to be distinct from Campo del Cielo. Uruacu appears to be a much older meteorite that has weathered in different conditions, and many individuals show cohenite when cut -- a mineral I have never seen in Campo del Cielo. Generally speaking, Campos run the full range from freshly-fusion crusted to rusty lumps, and everything in-between. But, Campo fell within the past ~5,000 years, so we're talking about rapid weathering in a wet environment (also why it's a ruster). Uruacu fell in a drier area, and most individuals exhibit a much more uniform covering of shale that does not readily flake off due to rusting. They seem to have fallen much longer ago, and are generally more weathered due to the fact that they've been around for longer. Uruacu generally resists rusting better. It would be like comparing Sikhote Alin to Henbury. No Henburies I know of rust, but, by and large, they're not as fresh as most Sikhotes. But some Sikhotes appear to have fallen into swampy areas and look pretty bad -- and rust. It's hard to mix the two up. The trouble is that I've also seen Campos sold as Uruacu, which complicates things. Uruacu is a very old fall. Even some reputable dealers have been selling specimens of new Campo (crust, regmaglypts) as Uruacu. Very different. I assume this is due to dishonest suppliers. There's a stunning, fairly large Uruacu for sale at the moment. Not mine, but I wonder if this will bring it out of the woodwork. Regards, Jason From: Adam Hupe raremeteori...@yahoo.com Date: Wed, Feb 27, 2013 at 2:59 PM Subject: Re: [meteorite-list] sharp protrusion from an iron meteorite To: Adam meteorite-list@meteoritecentral.com Isn't Baygorria another meteorite with a fake provenance? Basically a cleaned up Campo with a delaminated section protruding after a not-so-careful makeover. I would just tell him to seek first aid so he doesn't catch the dreaded Lawrencite disease. Adam - Original Message - From: Randy Korotev koro...@wustl.edu To: meteorite-list@meteoritecentral.com Cc: Sent: Wednesday, February 27, 2013 2:41 PM Subject: [meteorite-list] sharp protrusion from an iron meteorite I recieved a well prepared letter from a fellow with a question that I can't begin to answer. Maybe someone on the list has seen this kind of thing before. He bought a Baygorria (Iron, IAB complex) from a dealer 3 years ago. He picked it up recently to find a metal protrusion sticking out of the thing that was sharp enough to prick his thumb. Here's a jpg of his scanned photo. http://meteorites.wustl.edu/baygorria.jpg What's happened here? Randy Korotev St. Louis __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at
Re: [meteorite-list] Additional Details on the Large Fireball Event over Russia on Feb 15, 2013
Hi all! Nice I noticed the words atmosphere friction used on the new web page. Isn't it primarily ram pressure (rather than friction) which heats the air which then heats the object as it flows around it? I heard it on the internet, so it must be true!!! ;) Cheers, Jim Wooddell On Fri, Mar 1, 2013 at 4:47 PM, Ron Baalke baa...@zagami.jpl.nasa.gov wrote: http://neo.jpl.nasa.gov/news/fireball_130301.html Additional Details on the Large Fireball Event over Russia on Feb. 15, 2013 Don Yeomans Paul Chodas NASA/JPL Near-Earth Object Program Office March 1, 2013 The large fireball (technically, a superbolide) observed on the morning of February 15, 2013 in the skies near Chelyabinsk, Russia, was caused by a relatively small asteroid approximately 17 to 20 meters in size, entering the Earth's atmosphere at high speed and a shallow angle. In doing so it released a tremendous amount of energy, fragmented at high altitude, and produced a shower of pieces of various sizes that fell to the ground as meteorites. The fireball was observed not only by video cameras and low frequency infrasound detectors, but also by U.S. Government sensors. As a result, the details of the impact have become clearer. There is no connection between the Russian fireball event and the close approach of asteroid 2012 DA14, which occurred just over 16 hours later. New Fireball Data U.S. Government sensor data on fireballs are now reported on the NASA Near-Earth Object Program Office website at http://neo.jpl.nasa.gov/fireballs The February 15th event is the first entry on this new site, and it provides the following information about the fireball: * Date and time of maximum brightness: 15 Feb. 2013/03:20:33 GMT * Geographic location of maximum brightness: Latitude: 54.8 deg. N Longitude: 61.1 deg. E * Altitude of maximum brightness: 23.3 km (14.5 miles) * Velocity at peak brightness: 18.6 km/s (11.6 miles/s) * Approximate total radiated energy of fireball: 3.75 x 10^14 Joules. This is the equivalent of about 90 kilotons (kt) of TNT explosives, but it does not represent the total impact energy (see note below). * Approximate total impact energy of the fireball in kilotons of TNT explosives (the energy parameter usually quoted for a fireball): 440 kt. Note that the total energy of a fireball event is several times larger than the observed total radiated energy. The JPL fireballs website uses the following empirical formula derived by Peter Brown and colleagues to convert the optical radiant energy Eo into an estimate of the total impact energy E (see: Brown et al., The flux of small near-Earth objects colliding with the Earth. Nature, vol. 420, 21 Nov. 2002, pp. 294-296):. E = 8.2508 x E_o ^0.885 During the atmospheric entry phase, an impacting object is both slowed and heated by atmospheric friction. In front of it, a bow shock develops where atmospheric gases are compressed and heated. Some of this energy is radiated to the object causing it to ablate, and in most cases, to break apart. Fragmentation increases the amount of atmosphere intercepted and so enhances ablation and atmospheric braking. The object catastrophically disrupts when the force from the unequal pressures on the front and back sides exceeds its tensile strength. This was an extraordinarily large fireball, the most energetic impact event recognized since the 1908 Tunguska blast in Russian Siberia. The meteorites recovered from the Chelyabinsk fireball are reported to be ordinary chondrites, which have a typical density of about 3.6 g/cm^3. Given the total energy of about 440 kt, the approximate effective diameter of the asteroid would be about 18 meters, and its mass would be roughly 11,000 tons. Note that these estimates of total energy, diameter and mass are very approximate. Where Did the Chelyabinsk Impactor Come From? An approximate path for the Chelyabinsk impactor can be calculated from the newly released fireball data. (A similar calculation can be made from analysis of video records of the event; both methods yield similar results.) The first diagram shows the ground track of the impactor over the last minute or so before impact. The altitudes along this ground track have been called out and the asterisk on the path indicates the point of peak brightness, just south of Chelyabinsk. [Diagram 1: Ground track of impactor showing altitude values along the track] The second diagram shows the impactor's final trajectory over the last several hours, as it approached the Earth along a direction that remained within 15 degrees of the direction of the Sun. Asteroid detection telescopes cannot scan regions of the sky this close to the Sun. [Diagram 2: Approximate final trajectory of impactor] The third diagram shows the orbit of the impactor about the Sun. The orbit reaches from the asteroid belt at its
Re: [meteorite-list] Meteorite market talk on radio
When the March 2010 events occurred over Oklahoma, the local news stations treated me with nothing less than respect and warm welcome. They were fascinated by the event and the allsky camera. There was no controversy. It was an excellent opportunity for science education. My only regret is that no meteorites were found. Not all media is evil. Sent from my iPad On Mar 1, 2013, at 3:46 PM, Count Deiro countde...@earthlink.net wrote: Ladies and Gentlemen, I know this is going to sound cynical and pessimistic, but the truth is the truth. NO member of the media who contacts you has your interest, or the activity you engage in at heart. They care less, about you and what effect their writings may have on you, or your future activities. It's all about them and how much recognition and approval they can get by delivering a sensational story, even if they have to manipulate you into making innocent statements and then edit your comments. My advice is that unless your a pro at giving press briefings, interviews and distributing talking points. Don't walk, but run to the nearest exit. Can anyone argue that we are better off as a result of three years hyping the rarity and value of meteorites on cable TV and in the nation's print media? Regards, Guido -Original Message- From: Anne Black impact...@aol.com Sent: Mar 1, 2013 10:09 AM To: raremeteori...@yahoo.com, meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Meteorite market talk on radio Another idiot who reads the NewYork Times! For newbies or as a reminder, please read: http://imca.cc/index.php?option=com_wrapperItemid=192 Thanks Anne M. Black www.IMPACTIKA.com impact...@aol.com -Original Message- From: Adam Hupe raremeteori...@yahoo.com To: Adam meteorite-list@meteoritecentral.com Sent: Fri, Mar 1, 2013 10:54 am Subject: Re: [meteorite-list] Meteorite market talk on radio This talk turned me off from the second the interviewer claimed the Sahara was a black market. I would have ended the interview right then and there. Doesn't the media research anything anymore? When it comes to integrity, a modern journalist might ask What are you talking about, I have never heard of such a thing? Adam From: SatWatch.org cont...@satwatch.org To: meteorite-list@meteoritecentral.com meteorite-list@meteoritecentral.com Sent: Friday, March 1, 2013 7:39 AM Subject: [meteorite-list] Meteorite market talk on radio Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Additional Details on the Large Fireball Event over Russia on Feb 15, 2013
It is not heated by friction! Sent from my iPad On Mar 1, 2013, at 5:47 PM, Ron Baalke baa...@zagami.jpl.nasa.gov wrote: http://neo.jpl.nasa.gov/news/fireball_130301.html Additional Details on the Large Fireball Event over Russia on Feb. 15, 2013 Don Yeomans Paul Chodas NASA/JPL Near-Earth Object Program Office March 1, 2013 The large fireball (technically, a superbolide) observed on the morning of February 15, 2013 in the skies near Chelyabinsk, Russia, was caused by a relatively small asteroid approximately 17 to 20 meters in size, entering the Earth's atmosphere at high speed and a shallow angle. In doing so it released a tremendous amount of energy, fragmented at high altitude, and produced a shower of pieces of various sizes that fell to the ground as meteorites. The fireball was observed not only by video cameras and low frequency infrasound detectors, but also by U.S. Government sensors. As a result, the details of the impact have become clearer. There is no connection between the Russian fireball event and the close approach of asteroid 2012 DA14, which occurred just over 16 hours later. New Fireball Data U.S. Government sensor data on fireballs are now reported on the NASA Near-Earth Object Program Office website at http://neo.jpl.nasa.gov/fireballs The February 15th event is the first entry on this new site, and it provides the following information about the fireball: * Date and time of maximum brightness: 15 Feb. 2013/03:20:33 GMT * Geographic location of maximum brightness: Latitude: 54.8 deg. N Longitude: 61.1 deg. E * Altitude of maximum brightness: 23.3 km (14.5 miles) * Velocity at peak brightness: 18.6 km/s (11.6 miles/s) * Approximate total radiated energy of fireball: 3.75 x 10^14 Joules. This is the equivalent of about 90 kilotons (kt) of TNT explosives, but it does not represent the total impact energy (see note below). * Approximate total impact energy of the fireball in kilotons of TNT explosives (the energy parameter usually quoted for a fireball): 440 kt. Note that the total energy of a fireball event is several times larger than the observed total radiated energy. The JPL fireballs website uses the following empirical formula derived by Peter Brown and colleagues to convert the optical radiant energy Eo into an estimate of the total impact energy E (see: Brown et al., The flux of small near-Earth objects colliding with the Earth. Nature, vol. 420, 21 Nov. 2002, pp. 294-296):. E = 8.2508 x E_o ^0.885 During the atmospheric entry phase, an impacting object is both slowed and heated by atmospheric friction. In front of it, a bow shock develops where atmospheric gases are compressed and heated. Some of this energy is radiated to the object causing it to ablate, and in most cases, to break apart. Fragmentation increases the amount of atmosphere intercepted and so enhances ablation and atmospheric braking. The object catastrophically disrupts when the force from the unequal pressures on the front and back sides exceeds its tensile strength. This was an extraordinarily large fireball, the most energetic impact event recognized since the 1908 Tunguska blast in Russian Siberia. The meteorites recovered from the Chelyabinsk fireball are reported to be ordinary chondrites, which have a typical density of about 3.6 g/cm^3. Given the total energy of about 440 kt, the approximate effective diameter of the asteroid would be about 18 meters, and its mass would be roughly 11,000 tons. Note that these estimates of total energy, diameter and mass are very approximate. Where Did the Chelyabinsk Impactor Come From? An approximate path for the Chelyabinsk impactor can be calculated from the newly released fireball data. (A similar calculation can be made from analysis of video records of the event; both methods yield similar results.) The first diagram shows the ground track of the impactor over the last minute or so before impact. The altitudes along this ground track have been called out and the asterisk on the path indicates the point of peak brightness, just south of Chelyabinsk. [Diagram 1: Ground track of impactor showing altitude values along the track] The second diagram shows the impactor's final trajectory over the last several hours, as it approached the Earth along a direction that remained within 15 degrees of the direction of the Sun. Asteroid detection telescopes cannot scan regions of the sky this close to the Sun. [Diagram 2: Approximate final trajectory of impactor] The third diagram shows the orbit of the impactor about the Sun. The orbit reaches from the asteroid belt at its farthest from the Sun to near the orbit of Venus at its closest to the Sun. The impactor had likely been following this orbit for many thousands of years, crossing the Earth's orbit every time on its outbound leg. [Diagram 3:
Re: [meteorite-list] Meteorite market talk on radio
Guido, I fully support your comment regarding the press and press training. Even if you are a pro, you can never forget who has final say in what gets published. Interviews are even trickier. Unfortunately, people think it is easy and the press counts on that naïveté. Most everyone wants their 15 minutes, but you had better assess the risks. We live in a world where nothing is forgotten and nearly everything can be found on the web for others to reference for their next article or expose. Mendy Ouzillou On Mar 1, 2013, at 1:46 PM, Count Deiro countde...@earthlink.net wrote: Ladies and Gentlemen, I know this is going to sound cynical and pessimistic, but the truth is the truth. NO member of the media who contacts you has your interest, or the activity you engage in at heart. They care less, about you and what effect their writings may have on you, or your future activities. It's all about them and how much recognition and approval they can get by delivering a sensational story, even if they have to manipulate you into making innocent statements and then edit your comments. My advice is that unless your a pro at giving press briefings, interviews and distributing talking points. Don't walk, but run to the nearest exit. Can anyone argue that we are better off as a result of three years hyping the rarity and value of meteorites on cable TV and in the nation's print media? Regards, Guido -Original Message- From: Anne Black impact...@aol.com Sent: Mar 1, 2013 10:09 AM To: raremeteori...@yahoo.com, meteorite-list@meteoritecentral.com Subject: Re: [meteorite-list] Meteorite market talk on radio Another idiot who reads the NewYork Times! For newbies or as a reminder, please read: http://imca.cc/index.php?option=com_wrapperItemid=192 Thanks Anne M. Black www.IMPACTIKA.com impact...@aol.com -Original Message- From: Adam Hupe raremeteori...@yahoo.com To: Adam meteorite-list@meteoritecentral.com Sent: Fri, Mar 1, 2013 10:54 am Subject: Re: [meteorite-list] Meteorite market talk on radio This talk turned me off from the second the interviewer claimed the Sahara was a black market. I would have ended the interview right then and there. Doesn't the media research anything anymore? When it comes to integrity, a modern journalist might ask What are you talking about, I have never heard of such a thing? Adam From: SatWatch.org cont...@satwatch.org To: meteorite-list@meteoritecentral.com meteorite-list@meteoritecentral.com Sent: Friday, March 1, 2013 7:39 AM Subject: [meteorite-list] Meteorite market talk on radio Howdy List, Heard Bob Hazen talking about meteorites and the meteorite market last night on C2C. I put that audio on my website in the audio section if you desire to listen to his interview. http://www.meteorwatch.net/ Mike from SATWATCH.ORG METEORWATCH.NET Sent from my iPad __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Baygorria
Yes, I believe that I was scammed when I bought the large and rather expensive main mass of Baygorria. I believe that it was a Campo and gave it all away. For anyone who wishes to see the main mass of this iron meteorite for reference or comparison it was donated to Cascadia Meteorite Laboratory in Portland, Oregon. Yes it is called Baygorria but it is my belief that it is a Campo. A prime example of an expensive lesson learned. E.T. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] Baygorria
Edwin, indeed it was a scam. Sad, we all get scammed once in a while. I am happy to see the record set strait for all to see. The Giroldi brothers we pulling one hell of a scam for year selling Baygorria at the Tucson show, people kept trying to show me why they were different than Campo. Total sham. We must root out the scams in this business/collections and purge those who keep running cons. The new Russian fall has already brought many scammers running to quickly rob impatient buyers blind. If I've said it once, I've said it a thousand times, buy from us real dealers, stop being scammed by con-men on eBay. Michael Farmer Sent from my iPad On Mar 1, 2013, at 9:11 PM, Edwin Thompson etmeteori...@hotmail.com wrote: Yes, I believe that I was scammed when I bought the large and rather expensive main mass of Baygorria. I believe that it was a Campo and gave it all away. For anyone who wishes to see the main mass of this iron meteorite for reference or comparison it was donated to Cascadia Meteorite Laboratory in Portland, Oregon. Yes it is called Baygorria but it is my belief that it is a Campo. A prime example of an expensive lesson learned. E.T. __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] AD - Stanfield: America's Newest Recovery/ Slices and Whole Stone
Hello List, I have some of the new Stanfield Az. (prov) meteorite available. These meteorites are likely the result of the June, 08, 1998 event over the Phoenix/ Casa Grande Az. area. Robert Ward is responsible for giving the details to Galactic Analytics which resulted in the recovery of this fall, 15 years after the fact! I have to mention that my wife Lisa wittnessed this event from the Apache Junction area. It's the only fireball she's ever seen and it made quite an impression. She said it looked bigger than a basketball, flaming through the sky. Her and I have talked numerous times about how cool it would be to find a piece of it. I didn't think it would ever happen, but life had a different plan! This one means a lot to me. If that's not enough, ironically, I was on my way to the airport to pick up my aunt for her yearly meteorite hunting trip when I got the call on this one, and remarkably, she ended up finding the largest stone to date! (194.6g). This stone is likely to end up at ASU. You rock Laura! My 29g find had a ring around it, basically a sheet of metal running through, dividing the stone approximately in half. My friend Larry Sloan told me that Cascadia had an ongoing project studying this type of characteristic so I decided to cut the stone and donate a slice to them. While I had the saw running I figured what the heck, I should cut a couple more slices and offer them up! I'll be keeping the remainig half of the stone, since I can't seem to find anymore. After 10 days of vigorous, life endangering pursuit, hiking for hours on end through human/drug smuggler country, I can only find this one stone : ) Seriously, this place freaks me out a bit. I returned by myself today, hunting unfamiliar ground for about 6 hours, I felt a bit uneasy most of the time despite the 9mm on my side. I don't know if I'll be doing that again. I've roughly estimated ~1500 man/woman hours to recover 10 stones, totaling 600 grams. This is likely a conservative estimate. Needless to say, considering the sparcity of meteorites and real, physical danger, It's not likely that much of this (unofficial) wittnessed fall will ever be available. STA 004 1.075g end cut. 50% crust. $55.00 2.900g slice 60% crust. $145.00 3.335 slice. Cascadia 4.400g slice 99% crust. Metal vein $245.00 13.20g half stone not for sale : ) STA 005 (Annonymous Finder) 30.20 gram, 99.9% black fusion crust. $1500.00 Pic's upon request. Email off list. Paypal preferred. Sincerely, Larry Atkins IMCA # 1941 Ebay alienrockfarm __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
Re: [meteorite-list] AD - Stanfield: America's Newest Recovery/ Slices and Whole Stone
Hello Larry Thats great news... By chance do you have links to any photos of the meteorites? Shawn Alan IMCA 1633 ebay store http://www.ebay.com/sch/imca1633ny/m.html http://meteoritefalls.com/ From: Larry Atkins thetop...@aol.com To: meteorite-list@meteoritecentral.com Sent: Friday, March 1, 2013 10:44 PM Subject: [meteorite-list] AD - Stanfield: America's Newest Recovery/ Slices and Whole Stone Hello List, I have some of the new Stanfield Az. (prov) meteorite available. These meteorites are likely the result of the June, 08, 1998 event over the Phoenix/ Casa Grande Az. area. Robert Ward is responsible for giving the details to Galactic Analytics which resulted in the recovery of this fall, 15 years after the fact! I have to mention that my wife Lisa wittnessed this event from the Apache Junction area. It's the only fireball she's ever seen and it made quite an impression. She said it looked bigger than a basketball, flaming through the sky. Her and I have talked numerous times about how cool it would be to find a piece of it. I didn't think it would ever happen, but life had a different plan! This one means a lot to me. If that's not enough, ironically, I was on my way to the airport to pick up my aunt for her yearly meteorite hunting trip when I got the call on this one, and remarkably, she ended up finding the largest stone to date! (194.6g). This stone is likely to end up at ASU. You rock Laura! My 29g find had a ring around it, basically a sheet of metal running through, dividing the stone approximately in half. My friend Larry Sloan told me that Cascadia had an ongoing project studying this type of characteristic so I decided to cut the stone and donate a slice to them. While I had the saw running I figured what the heck, I should cut a couple more slices and offer them up! I'll be keeping the remainig half of the stone, since I can't seem to find anymore. After 10 days of vigorous, life endangering pursuit, hiking for hours on end through human/drug smuggler country, I can only find this one stone : ) Seriously, this place freaks me out a bit. I returned by myself today, hunting unfamiliar ground for about 6 hours, I felt a bit uneasy most of the time despite the 9mm on my side. I don't know if I'll be doing that again. I've roughly estimated ~1500 man/woman hours to recover 10 stones, totaling 600 grams. This is likely a conservative estimate. Needless to say, considering the sparcity of meteorites and real, physical danger, It's not likely that much of this (unofficial) wittnessed fall will ever be available. STA 004 1.075g end cut. 50% crust. $55.00 2.900g slice 60% crust. $145.00 3.335 slice. Cascadia 4.400g slice 99% crust. Metal vein $245.00 13.20g half stone not for sale : ) STA 005 (Annonymous Finder) 30.20 gram, 99.9% black fusion crust. $1500.00 Pic's upon request. Email off list. Paypal preferred. Sincerely, Larry Atkins IMCA # 1941 Ebay alienrockfarm __ Visit the Archives at http://www.meteorite-list-archives.com/ Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] added another 16 minute + Russian meteorte video
Hi List. Because of the historical significance I have decided to add a second video compilation of the Chelyabinsk, Russia meteorite event on my Blackhole Mystery Video of the Month page. This is about 14+ minutes and has quite a few real nice video's of the meteorite in motion as well as the sound of the shock wave. Enjoy! http://www.ctreasurescwonders.com/secret_video.html Sincerely Don Merchant Founder-Cosmic Treasures Celestial Wonders www.ctreasurescwonders.com IMCA #0960 __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Stanfield - Sold Out
Sorry, all gone! Thanks. Sincerely, Larry Atkins IMCA # 1941 Ebay alienrockfarm __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
[meteorite-list] Meteorite Picture of the Day
Today's Meteorite Picture of the Day: Vaca Muerta Contributed by: Clio Laplace http://www.tucsonmeteorites.com/mpod.asp __ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
