Re: [meteorite-list] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Steinar Midtskogen]

Chris Peterson  writes:

> The majority that produce _falls_, yes, but not _finds_, I think. That
> is, your typical find (either a single individual or several pieces)
> probably didn't come from a spectacular meteor event. Of course, finds
> in large strewn fields are a different matter.

Yes.  A meteor travelling at 11 km/s only has a 1/4 of the energy of
an equally sized meteor travelling at 22 km/s.

The fall of the two most recent meteorite finds in Norway can be
dated, but none had reports of sound.  Most of these meteorite
dropping fireballs are not bright enough to be detected because of
clouds or daylight, and anything audible can easily be mistaken for
thunder or human activity anyway.

> Atmospheric entry models demonstrate that it's not difficult for a
> small body to drop a few rocks on the ground without ever depositing
> the sort of energy into the atmosphere we associate with bright
> fireballs lasting several seconds and producing audible acoustics at
> ground level.

The most recent find in Norway, a 4,5 kg chondrite, seems to have come
from this innocent looking fireball, seen from about 200 km:

  http://norskmeteornettverk.no/bilder/2013/ildkule-20120203.mp4

The brightness normalised to 100 km distance seems to be around -10,
and it was visible for 3.3 seconds, not very impressive.  It was
photographed by two cameras and the bearings match very well (but
there is a ±25 km or so uncertainty, so there is a slight possibility
that the fireball is unrelated).  The speed was 13 km/s, angle of
incidence 57 degrees, and it burned out between 25 and 30 km altitude.
I originally dismissed it as a somewhat unlikely meteorite candidate,
but when a meteorite was found by chance 16 months later, I'm much
less sure and I rather lean towards that it did produce this
meteorite.

-- 
Steinar
__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Chris Peterson]

The majority that produce _falls_, yes, but not _finds_, I think. That 
is, your typical find (either a single individual or several pieces) 
probably didn't come from a spectacular meteor event. Of course, finds 
in large strewn fields are a different matter.


Atmospheric entry models demonstrate that it's not difficult for a small 
body to drop a few rocks on the ground without ever depositing the sort 
of energy into the atmosphere we associate with bright fireballs lasting 
several seconds and producing audible acoustics at ground level.


Chris

***
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 4/14/2014 10:26 AM, Raymond Borges wrote:

Hello,

Regarding this comment "In all likelihood, the majority of meteorite
falls are not preceded with
either a significant fireball nor any acoustics."

I think the majority of meteorite falls that produce finds will
exhibit these features based on the meteorite books I have read from
Nininger and Norton among others. What do others think?

spacerocks.org


__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Raymond Borges]

Hello,

Regarding this comment "In all likelihood, the majority of meteorite
falls are not preceded with
either a significant fireball nor any acoustics."

I think the majority of meteorite falls that produce finds will
exhibit these features based on the meteorite books I have read from
Nininger and Norton among others. What do others think?

spacerocks.org
__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Jim Wooddell]

Hi Chris,

Yes, and that's what we do!

Jim


On 4/14/2014 8:18 AM, Chris Peterson wrote:
Ground level sonics are a very good indicator that meteorites were 
produced. However, the absence of sonics doesn't argue against 
meteorites at all.


In all likelihood, the majority of meteorite falls are not preceded 
with either a significant fireball nor any acoustics. We are subject 
to a very strong observation bias because those tend to be the only 
sort of events where we can actually correlate meteors to meteorites. 
And of course, such meteorites represent only a tiny fraction of the 
total.


Regardless of any other factors, fireballs that display either a 
massive terminal explosion or multiple fragmentation events along 
their paths warrant close examination as potential meteorite producers.


Chris

***
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 4/13/2014 4:47 PM, Jim Wooddell wrote:

Hi Shawn,  This is a fairly normal event. Nothing much to get excited
about.  The calculation is an error.If the 40.8km is the burn out I
doubt anyone will waste much time on this one.
No sonic reports to speak of and that is also not a good sign. The UT is
questionable too!

Jim


__

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


-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4355 / Virus Database: 3882/7340 - Release Date: 04/13/14





--
Jim Wooddell
jim.woodd...@suddenlink.net
http://pages.suddenlink.net/chondrule/

__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Ruben Garcia]

Thanks Chris,

Couldn't have said it better!

Maybe the "Guru's of Doppler" (Fries and Matson) can give us a little
better insight as to whether we go or stay this time.

On Mon, Apr 14, 2014 at 8:18 AM, Chris Peterson  wrote:
> Ground level sonics are a very good indicator that meteorites were produced.
> However, the absence of sonics doesn't argue against meteorites at all.
>
> In all likelihood, the majority of meteorite falls are not preceded with
> either a significant fireball nor any acoustics. We are subject to a very
> strong observation bias because those tend to be the only sort of events
> where we can actually correlate meteors to meteorites. And of course, such
> meteorites represent only a tiny fraction of the total.
>
> Regardless of any other factors, fireballs that display either a massive
> terminal explosion or multiple fragmentation events along their paths
> warrant close examination as potential meteorite producers.
>
>
> Chris
>
> ***
> Chris L Peterson
> Cloudbait Observatory
> http://www.cloudbait.com
>
> On 4/13/2014 4:47 PM, Jim Wooddell wrote:
>>
>> Hi Shawn,  This is a fairly normal event.  Nothing much to get excited
>> about.  The calculation is an error.If the 40.8km is the burn out I
>> doubt anyone will waste much time on this one.
>> No sonic reports to speak of and that is also not a good sign. The UT is
>> questionable too!
>>
>> Jim
>
>
> __
>
> 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



-- 
Rock On!

Ruben Garcia
http://www.MrMeteorite.com
__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Chris Peterson]

Ground level sonics are a very good indicator that meteorites were 
produced. However, the absence of sonics doesn't argue against 
meteorites at all.


In all likelihood, the majority of meteorite falls are not preceded with 
either a significant fireball nor any acoustics. We are subject to a 
very strong observation bias because those tend to be the only sort of 
events where we can actually correlate meteors to meteorites. And of 
course, such meteorites represent only a tiny fraction of the total.


Regardless of any other factors, fireballs that display either a massive 
terminal explosion or multiple fragmentation events along their paths 
warrant close examination as potential meteorite producers.


Chris

***
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 4/13/2014 4:47 PM, Jim Wooddell wrote:

Hi Shawn,  This is a fairly normal event.  Nothing much to get excited
about.  The calculation is an error.If the 40.8km is the burn out I
doubt anyone will waste much time on this one.
No sonic reports to speak of and that is also not a good sign. The UT is
questionable too!

Jim


__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Ruben Garcia]

Huh?

I never said there were stones on the ground...I never said anything
like that. Only that it was a huge sighting - which it was.  However,
I hope my posts get people excited about a possible fall, since in my
opinion there is no greater rush than someone finding their first
fall. So, if my posts get people looking for information (though not
actively searching just yet) then I'm happy.

Like I said before. If a stone was found and therefor we had a
definitive search area many of us would go looking for more. Sonic
Boom reports or not!




On Mon, Apr 14, 2014 at 7:09 AM, Jim Wooddell
 wrote:
> Hi Mike!
>
> Any post that gets folks in a frenzy.  However, this was response to Ruben.
>
> Jim
>
>
>
> On 4/13/2014 6:45 PM, Mike Miller wrote:
>>
>> Hey Jim just curious are you referring to my post here?
>> When I hear about possible rocks on the ground without basis, it bugs me.
>> It reminds me of the calling wolf syndrome.
>>
>>
>> On Sun, Apr 13, 2014 at 5:57 PM, Jim Wooddell > > wrote:
>>
>> Hi Ruben,
>>
>> I think Whetstone had far greater evidence of there being stones
>> on the ground if I remember correctly.
>> Didn't Jack find one very shortly after the fall?  There were
>> multiple camera captures, sonics and witnesses, both visual and
>> audible.
>>
>> The sonics I refer to do include human witnesses but I tend to
>> look for the sonic station reports if there are any.
>> We certainly could use more sonic stations and that is used to
>> back up and confirm the video records of the events.
>>
>> When I hear about possible rocks on the ground without basis, it
>> bugs me.  It reminds me of the calling wolf syndrome.
>>  I just do not like seeing people going on wild goose chases but I
>> suppose if that floats their boat that's fine and not my concern.
>> But when I am working an event  I wont lead someone to think there
>> is possibly something on the ground when I can't back that up.
>> In the next day or so, the gurus will likely have a good idea on
>> the trajectory of this meteor.  There is a lot to consider.
>> I like the idea of work smarter, not harder!
>>
>> So we still have the Tucson eventmultiple camera captures,
>> sonics and lots of witnesses.  There ought to be 100 hunters out
>> there looking.
>> Nothing found to date.
>>
>> Jim
>>
>>
>> On 4/13/2014 4:06 PM, Ruben Garcia wrote:
>>
>> Hi all,
>>
>> Jim it's pretty much the same with any meteor event. The truth is
>> unless we have good Doppler information or someone personally
>> witnessed a meteorite strike a house or a car, or there is a stone
>> found - there's not much reason to waste time looking.
>>
>> Most people (me included) thought the Whetstone Mountains
>> meteor event
>> was not worth looking for - It took me over a month to even
>> start the
>> hunt. I wish I'd have started sooner.
>>
>> Also, the lack of Sonic reports may be due to the fact that it
>> landed
>> where no one lives and not that it didn't produce a sonic boom.
>>
>> I've been doing this a long time and I think the bottom line
>> is this:
>> If someone finds a meteorite, just one that went though a roof
>> - most
>> hunters would go try to find more - me included.
>>
>>
>> On Sun, Apr 13, 2014 at 3:47 PM, Jim Wooddell
>> > > wrote:
>>
>> Hi Shawn,  This is a fairly normal event.  Nothing much to
>> get excited
>> about.  The calculation is an error.If the 40.8km is
>> the burn out I
>> doubt anyone will waste much time on this one.
>> No sonic reports to speak of and that is also not a good
>> sign. The UT is
>> questionable too!
>>
>> Jim
>>
>>
>>
>>
>>
>>
>> On 4/13/2014 12:57 PM, shawna...@meteoritefalls.com
>>  wrote:
>>
>> Hello Listers
>>
>> I found some info on the fall and here is some stats...
>>
>> vel 667.2 km/s beg 135.8 km end 40.8 km
>>
>> Now could a meteorite come from the Vel speed? I mean
>> thats really fast
>> 667.2km, or that could be a mistake, which I think it
>> is? With the
>> meteor ending at 40km there is a possibility there
>> could be some stones
>> on the ground. And after looking at the video I could
>> see the meteor for
>> around 4 seconds and at the end the meteor got brighter.
>>
>> more stats below...
>>
>> Shawn Alan
>> IMCA 1633
>> ebay store
>>  

Re: [meteorite-list] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Jim Wooddell]

Hi Mike!

Any post that gets folks in a frenzy.  However, this was response to Ruben.

Jim


On 4/13/2014 6:45 PM, Mike Miller wrote:

Hey Jim just curious are you referring to my post here?
When I hear about possible rocks on the ground without basis, it bugs 
me.  It reminds me of the calling wolf syndrome.



On Sun, Apr 13, 2014 at 5:57 PM, Jim Wooddell 
mailto:jim.woodd...@suddenlink.net>> wrote:


Hi Ruben,

I think Whetstone had far greater evidence of there being stones
on the ground if I remember correctly.
Didn't Jack find one very shortly after the fall?  There were
multiple camera captures, sonics and witnesses, both visual and
audible.

The sonics I refer to do include human witnesses but I tend to
look for the sonic station reports if there are any.
We certainly could use more sonic stations and that is used to
back up and confirm the video records of the events.

When I hear about possible rocks on the ground without basis, it
bugs me.  It reminds me of the calling wolf syndrome.
 I just do not like seeing people going on wild goose chases but I
suppose if that floats their boat that's fine and not my concern.
But when I am working an event  I wont lead someone to think there
is possibly something on the ground when I can't back that up.
In the next day or so, the gurus will likely have a good idea on
the trajectory of this meteor.  There is a lot to consider.
I like the idea of work smarter, not harder!

So we still have the Tucson eventmultiple camera captures,
sonics and lots of witnesses.  There ought to be 100 hunters out
there looking.
Nothing found to date.

Jim


On 4/13/2014 4:06 PM, Ruben Garcia wrote:

Hi all,

Jim it's pretty much the same with any meteor event. The truth is
unless we have good Doppler information or someone personally
witnessed a meteorite strike a house or a car, or there is a stone
found - there's not much reason to waste time looking.

Most people (me included) thought the Whetstone Mountains
meteor event
was not worth looking for - It took me over a month to even
start the
hunt. I wish I'd have started sooner.

Also, the lack of Sonic reports may be due to the fact that it
landed
where no one lives and not that it didn't produce a sonic boom.

I've been doing this a long time and I think the bottom line
is this:
If someone finds a meteorite, just one that went though a roof
- most
hunters would go try to find more - me included.


On Sun, Apr 13, 2014 at 3:47 PM, Jim Wooddell
mailto:jim.woodd...@suddenlink.net>> wrote:

Hi Shawn,  This is a fairly normal event.  Nothing much to
get excited
about.  The calculation is an error.If the 40.8km is
the burn out I
doubt anyone will waste much time on this one.
No sonic reports to speak of and that is also not a good
sign. The UT is
questionable too!

Jim






On 4/13/2014 12:57 PM, shawna...@meteoritefalls.com
 wrote:

Hello Listers

I found some info on the fall and here is some stats...

vel 667.2 km/s beg 135.8 km end 40.8 km

Now could a meteorite come from the Vel speed? I mean
thats really fast
667.2km, or that could be a mistake, which I think it
is? With the
meteor ending at 40km there is a possibility there
could be some stones
on the ground. And after looking at the video I could
see the meteor for
around 4 seconds and at the end the meteor got brighter.

more stats below...

Shawn Alan
IMCA 1633
ebay store
http://www.ebay.com/sch/imca1633nyc/m.html
Meteoritefalls.com


time 20140413 3.0738 hours
lat  32 26 22.632 =  32.4396 deg
lon 253 16 38.856 = 253.2775 deg
 ht 40.775 b -1.38207 7.62031 -17.37020 -7.68054
 alp 300.962 +/-  0.462 deg
 del  70.037 +/-  0.310 deg
   v_inf 667.240 +/- 977.292 km/s
   v_avg 667.240 +/- 977.292 km/s
 a  -0.002 +/-
 0.006 AU
   e 493.776 +/- 1444.978
incl  85.761 +/-  3.793 deg
   omega 168.225 +/-  0.185 deg
asc_node  22.922 +/-  0.000 deg
 v_g 667.102 +/- 977.428 km/s
 v_h 668.691 +/- 976.474 km/

[meteorite-list] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[shawnalan]

Hello Lister

Whetstone did have a lot of evidence and a video, which this fall that
happened yesterday has video as well. My question is the fireball went
out around 40km, that some what high, but you never know till some finds
a stone like Ruben said or if someone can find some bounce back on the
Doppler :) which I just ordered some graphs and hope tonight when I have
some time I can check out the data and see if I see anything. 


Shawn Alan
IMCA 1633 
ebay store
http://www.ebay.com/sch/imca1633nyc/m.html
www.meteoritefalls.com 

__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Jim Wooddell]

Hi Ruben,

I think Whetstone had far greater evidence of there being stones on the 
ground if I remember correctly.
Didn't Jack find one very shortly after the fall?  There were multiple 
camera captures, sonics and witnesses, both visual and audible.


The sonics I refer to do include human witnesses but I tend to look for 
the sonic station reports if there are any.
We certainly could use more sonic stations and that is used to back up 
and confirm the video records of the events.


When I hear about possible rocks on the ground without basis, it bugs 
me.  It reminds me of the calling wolf syndrome.
 I just do not like seeing people going on wild goose chases but I 
suppose if that floats their boat that's fine and not my concern.
But when I am working an event  I wont lead someone to think there is 
possibly something on the ground when I can't back that up.
In the next day or so, the gurus will likely have a good idea on the 
trajectory of this meteor.  There is a lot to consider.

I like the idea of work smarter, not harder!

So we still have the Tucson eventmultiple camera captures, sonics 
and lots of witnesses.  There ought to be 100 hunters out there looking.

Nothing found to date.

Jim

On 4/13/2014 4:06 PM, Ruben Garcia wrote:

Hi all,

Jim it's pretty much the same with any meteor event. The truth is
unless we have good Doppler information or someone personally
witnessed a meteorite strike a house or a car, or there is a stone
found - there's not much reason to waste time looking.

Most people (me included) thought the Whetstone Mountains meteor event
was not worth looking for - It took me over a month to even start the
hunt. I wish I'd have started sooner.

Also, the lack of Sonic reports may be due to the fact that it landed
where no one lives and not that it didn't produce a sonic boom.

I've been doing this a long time and I think the bottom line is this:
If someone finds a meteorite, just one that went though a roof - most
hunters would go try to find more - me included.


On Sun, Apr 13, 2014 at 3:47 PM, Jim Wooddell
 wrote:

Hi Shawn,  This is a fairly normal event.  Nothing much to get excited
about.  The calculation is an error.If the 40.8km is the burn out I
doubt anyone will waste much time on this one.
No sonic reports to speak of and that is also not a good sign. The UT is
questionable too!

Jim






On 4/13/2014 12:57 PM, shawna...@meteoritefalls.com wrote:

Hello Listers

I found some info on the fall and here is some stats...

vel 667.2 km/s beg 135.8 km end 40.8 km

Now could a meteorite come from the Vel speed? I mean thats really fast
667.2km, or that could be a mistake, which I think it is? With the
meteor ending at 40km there is a possibility there could be some stones
on the ground. And after looking at the video I could see the meteor for
around 4 seconds and at the end the meteor got brighter.

more stats below...

Shawn Alan
IMCA 1633
ebay store
http://www.ebay.com/sch/imca1633nyc/m.html
Meteoritefalls.com


time 20140413 3.0738 hours
lat  32 26 22.632 =  32.4396 deg
lon 253 16 38.856 = 253.2775 deg
 ht 40.775 b -1.38207 7.62031 -17.37020 -7.68054
 alp 300.962 +/-  0.462 deg
 del  70.037 +/-  0.310 deg
   v_inf 667.240 +/- 977.292 km/s
   v_avg 667.240 +/- 977.292 km/s
 a  -0.002 +/-  0.006 AU
   e 493.776 +/- 1444.978
incl  85.761 +/-  3.793 deg
   omega 168.225 +/-  0.185 deg
asc_node  22.922 +/-  0.000 deg
 v_g 667.102 +/- 977.428 km/s
 v_h 668.691 +/- 976.474 km/s
 alp_geo 301.065 +/-  0.482 deg
 del_geo  70.004 +/-  0.311 deg
   q_per   0.982 +/-  0.001 AU
   q_aph  -0.986 +/-  0.011 AU
  lambda  30.964 +/-  1.513 deg
beta  78.151 +/-  0.165 deg
   true anom  11.775 +/-  0.165 deg

 T_j   hyp

__

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


-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4355 / Virus Database: 3882/7339 - Release Date: 04/13/14




--
Jim Wooddell
jim.woodd...@suddenlink.net
http://pages.suddenlink.net/chondrule/


__

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






--
Jim Wooddell
jim.woodd...@suddenlink.net
http://pages.suddenlink.net/chondrule/

__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Ruben Garcia]

Hi Greg,

It wouldn't be the first time a meteor event ended in a restricted
zone.  I didn't participate, but ask anyone that went looking near
Dugway in Utah. If it landed in White Sands it may as well landed in
the ocean...it's gone.

On Sun, Apr 13, 2014 at 4:21 PM, Greg Crinklaw  wrote:
> On 4/13/2014 5:06 PM, Ruben Garcia wrote:
>>
>> Also, the lack of Sonic reports may be due to the fact that it landed
>> where no one lives and not that it didn't produce a sonic boom.
>
>
> For what it's worth, I heard what sounded like distant thunder last night at
> about the right time. This from Cloudcroft.
>
> The data described earlier is from ASGARD:
>
> http://fireballs.ndc.nasa.gov/
>
> Follow the 20140413 link and look for the 20140413 03:04:25 UTC event. I
> believe this is an automated system that did the calculation based on the
> single NMSU camera only.
>
> I'm interested in this one because it is in my back yard; in the general
> area where I have previously hunted.
>
> BTW the NMSU camera shows the fireball moving almost directly away. This
> gives us a radial direction away from the camera. A very preliminary
> analysis: when I combine this with the nearby visual reports, it appears
> most likely that any meteorites fell on the White Sands Missile Range. If
> so, even if it fell through somebody's roof we are not likely going to have
> access to the area.
>
> Greg
>
> --
> Greg Crinklaw
> Astronomical Software Developer
> Cloudcroft, New Mexico
> skyhound.com
>
> __
>
> 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



-- 
Rock On!

Ruben Garcia
http://www.MrMeteorite.com
__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Greg Crinklaw]

On 4/13/2014 5:06 PM, Ruben Garcia wrote:

Also, the lack of Sonic reports may be due to the fact that it landed
where no one lives and not that it didn't produce a sonic boom.


For what it's worth, I heard what sounded like distant thunder last 
night at about the right time. This from Cloudcroft.


The data described earlier is from ASGARD:

http://fireballs.ndc.nasa.gov/

Follow the 20140413 link and look for the 20140413 03:04:25 UTC event. I 
believe this is an automated system that did the calculation based on 
the single NMSU camera only.


I'm interested in this one because it is in my back yard; in the general 
area where I have previously hunted.


BTW the NMSU camera shows the fireball moving almost directly away. This 
gives us a radial direction away from the camera. A very preliminary 
analysis: when I combine this with the nearby visual reports, it appears 
most likely that any meteorites fell on the White Sands Missile Range. 
If so, even if it fell through somebody's roof we are not likely going 
to have access to the area.


Greg

--
Greg Crinklaw
Astronomical Software Developer
Cloudcroft, New Mexico
skyhound.com
__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Ruben Garcia]

Hi all,

Jim it's pretty much the same with any meteor event. The truth is
unless we have good Doppler information or someone personally
witnessed a meteorite strike a house or a car, or there is a stone
found - there's not much reason to waste time looking.

Most people (me included) thought the Whetstone Mountains meteor event
was not worth looking for - It took me over a month to even start the
hunt. I wish I'd have started sooner.

Also, the lack of Sonic reports may be due to the fact that it landed
where no one lives and not that it didn't produce a sonic boom.

I've been doing this a long time and I think the bottom line is this:
If someone finds a meteorite, just one that went though a roof - most
hunters would go try to find more - me included.


On Sun, Apr 13, 2014 at 3:47 PM, Jim Wooddell
 wrote:
> Hi Shawn,  This is a fairly normal event.  Nothing much to get excited
> about.  The calculation is an error.If the 40.8km is the burn out I
> doubt anyone will waste much time on this one.
> No sonic reports to speak of and that is also not a good sign. The UT is
> questionable too!
>
> Jim
>
>
>
>
>
>
> On 4/13/2014 12:57 PM, shawna...@meteoritefalls.com wrote:
>>
>> Hello Listers
>>
>> I found some info on the fall and here is some stats...
>>
>> vel 667.2 km/s beg 135.8 km end 40.8 km
>>
>> Now could a meteorite come from the Vel speed? I mean thats really fast
>> 667.2km, or that could be a mistake, which I think it is? With the
>> meteor ending at 40km there is a possibility there could be some stones
>> on the ground. And after looking at the video I could see the meteor for
>> around 4 seconds and at the end the meteor got brighter.
>>
>> more stats below...
>>
>> Shawn Alan
>> IMCA 1633
>> ebay store
>> http://www.ebay.com/sch/imca1633nyc/m.html
>> Meteoritefalls.com
>>
>>
>> time 20140413 3.0738 hours
>>lat  32 26 22.632 =  32.4396 deg
>>lon 253 16 38.856 = 253.2775 deg
>> ht 40.775 b -1.38207 7.62031 -17.37020 -7.68054
>> alp 300.962 +/-  0.462 deg
>> del  70.037 +/-  0.310 deg
>>   v_inf 667.240 +/- 977.292 km/s
>>   v_avg 667.240 +/- 977.292 km/s
>> a  -0.002 +/-  0.006 AU
>>   e 493.776 +/- 1444.978
>>incl  85.761 +/-  3.793 deg
>>   omega 168.225 +/-  0.185 deg
>>asc_node  22.922 +/-  0.000 deg
>> v_g 667.102 +/- 977.428 km/s
>> v_h 668.691 +/- 976.474 km/s
>> alp_geo 301.065 +/-  0.482 deg
>> del_geo  70.004 +/-  0.311 deg
>>   q_per   0.982 +/-  0.001 AU
>>   q_aph  -0.986 +/-  0.011 AU
>>  lambda  30.964 +/-  1.513 deg
>>beta  78.151 +/-  0.165 deg
>>   true anom  11.775 +/-  0.165 deg
>>
>> T_j   hyp
>>
>> __
>>
>> 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
>>
>>
>> -
>> No virus found in this message.
>> Checked by AVG - www.avg.com
>> Version: 2014.0.4355 / Virus Database: 3882/7339 - Release Date: 04/13/14
>>
>>
>
>
> --
> Jim Wooddell
> jim.woodd...@suddenlink.net
> http://pages.suddenlink.net/chondrule/
>
>
> __
>
> 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



-- 
Rock On!

Ruben Garcia
http://www.MrMeteorite.com
__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Jim Wooddell]

Hi Shawn,  This is a fairly normal event.  Nothing much to get excited 
about.  The calculation is an error.If the 40.8km is the burn out I 
doubt anyone will waste much time on this one.
No sonic reports to speak of and that is also not a good sign. The UT is 
questionable too!


Jim





On 4/13/2014 12:57 PM, shawna...@meteoritefalls.com wrote:

Hello Listers

I found some info on the fall and here is some stats...

vel 667.2 km/s beg 135.8 km end 40.8 km

Now could a meteorite come from the Vel speed? I mean thats really fast
667.2km, or that could be a mistake, which I think it is? With the
meteor ending at 40km there is a possibility there could be some stones
on the ground. And after looking at the video I could see the meteor for
around 4 seconds and at the end the meteor got brighter.

more stats below...

Shawn Alan
IMCA 1633
ebay store
http://www.ebay.com/sch/imca1633nyc/m.html
Meteoritefalls.com


time 20140413 3.0738 hours
   lat  32 26 22.632 =  32.4396 deg
   lon 253 16 38.856 = 253.2775 deg
ht 40.775 b -1.38207 7.62031 -17.37020 -7.68054
alp 300.962 +/-  0.462 deg
del  70.037 +/-  0.310 deg
  v_inf 667.240 +/- 977.292 km/s
  v_avg 667.240 +/- 977.292 km/s
  
  a  -0.002 +/-  0.006 AU

  e 493.776 +/- 1444.978
   incl  85.761 +/-  3.793 deg
  omega 168.225 +/-  0.185 deg
   asc_node  22.922 +/-  0.000 deg
v_g 667.102 +/- 977.428 km/s
v_h 668.691 +/- 976.474 km/s
alp_geo 301.065 +/-  0.482 deg
del_geo  70.004 +/-  0.311 deg
  q_per   0.982 +/-  0.001 AU
  q_aph  -0.986 +/-  0.011 AU
 lambda  30.964 +/-  1.513 deg
   beta  78.151 +/-  0.165 deg
  true anom  11.775 +/-  0.165 deg

T_j   hyp

__

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


-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2014.0.4355 / Virus Database: 3882/7339 - Release Date: 04/13/14





--
Jim Wooddell
jim.woodd...@suddenlink.net
http://pages.suddenlink.net/chondrule/

__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[Chris Peterson]

There is almost no possibility of a meteor having that speed. The 
maximum possible velocity a body in orbit around the Sun can encounter 
the Earth at is 72 km/s. Anything faster than that would exceed the 
solar escape velocity, implying either some sort of slingshot orbit or a 
body originating outside the Solar System. Only a few meteors have been 
observed with velocities above 72 km/s, and those only a bit more, and 
perhaps of questionable measurement. More are in radar data (small 
particles), but it has been called into question if these actually have 
the velocities being measured.


Suffice to say, last night's meteor showed the characteristics of a low 
to medium speed parent body- something between 11 km/s and say 40 km/s.


What is the source of the data you are using for your calculations?

Chris

***
Chris L Peterson
Cloudbait Observatory
http://www.cloudbait.com

On 4/13/2014 1:57 PM, shawna...@meteoritefalls.com wrote:

Hello Listers

I found some info on the fall and here is some stats...

vel 667.2 km/s beg 135.8 km end 40.8 km

Now could a meteorite come from the Vel speed? I mean thats really fast
667.2km, or that could be a mistake, which I think it is? With the
meteor ending at 40km there is a possibility there could be some stones
on the ground. And after looking at the video I could see the meteor for
around 4 seconds and at the end the meteor got brighter.

more stats below...

Shawn Alan
IMCA 1633
ebay store
http://www.ebay.com/sch/imca1633nyc/m.html
Meteoritefalls.com


time 20140413 3.0738 hours
   lat  32 26 22.632 =  32.4396 deg
   lon 253 16 38.856 = 253.2775 deg
ht 40.775 b -1.38207 7.62031 -17.37020 -7.68054
alp 300.962 +/-  0.462 deg
del  70.037 +/-  0.310 deg
  v_inf 667.240 +/- 977.292 km/s
  v_avg 667.240 +/- 977.292 km/s

  a  -0.002 +/-  0.006 AU
  e 493.776 +/- 1444.978
   incl  85.761 +/-  3.793 deg
  omega 168.225 +/-  0.185 deg
   asc_node  22.922 +/-  0.000 deg
v_g 667.102 +/- 977.428 km/s
v_h 668.691 +/- 976.474 km/s
alp_geo 301.065 +/-  0.482 deg
del_geo  70.004 +/-  0.311 deg
  q_per   0.982 +/-  0.001 AU
  q_aph  -0.986 +/-  0.011 AU
 lambda  30.964 +/-  1.513 deg
   beta  78.151 +/-  0.165 deg
  true anom  11.775 +/-  0.165 deg

T_j   hyp


__

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] HUGE Meteor Sighting in Cottonwood AZ - Stats from fall

[shawnalan]

Hello Listers

I found some info on the fall and here is some stats...

vel 667.2 km/s beg 135.8 km end 40.8 km 

Now could a meteorite come from the Vel speed? I mean thats really fast
667.2km, or that could be a mistake, which I think it is? With the
meteor ending at 40km there is a possibility there could be some stones
on the ground. And after looking at the video I could see the meteor for
around 4 seconds and at the end the meteor got brighter.  

more stats below...

Shawn Alan
IMCA 1633 
ebay store
http://www.ebay.com/sch/imca1633nyc/m.html
Meteoritefalls.com 


time 20140413 3.0738 hours
  lat  32 26 22.632 =  32.4396 deg
  lon 253 16 38.856 = 253.2775 deg
   ht 40.775 b -1.38207 7.62031 -17.37020 -7.68054
   alp 300.962 +/-  0.462 deg 
   del  70.037 +/-  0.310 deg 
 v_inf 667.240 +/- 977.292 km/s
 v_avg 667.240 +/- 977.292 km/s
 
 a  -0.002 +/-  0.006 AU  
 e 493.776 +/- 1444.978 
  incl  85.761 +/-  3.793 deg 
 omega 168.225 +/-  0.185 deg 
  asc_node  22.922 +/-  0.000 deg 
   v_g 667.102 +/- 977.428 km/s
   v_h 668.691 +/- 976.474 km/s
   alp_geo 301.065 +/-  0.482 deg 
   del_geo  70.004 +/-  0.311 deg 
 q_per   0.982 +/-  0.001 AU  
 q_aph  -0.986 +/-  0.011 AU  
lambda  30.964 +/-  1.513 deg 
  beta  78.151 +/-  0.165 deg 
 true anom  11.775 +/-  0.165 deg 

   T_j   hyp

__

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