The mhcmagazine picture is seen from an angle in google earth. When you look at it directly overhead, it looks like this:
http://maps.google.com/?ie=UTF8&ll=35.02599,-111.022038&spn=0.021402,0.045276&t=h&z=15 Looks pretty round to me. As for the little crater to the SSW, definitely man made, but not sure for what use. -Yinan On Fri, Sep 10, 2010 at 4:59 AM, Meteorites USA <e...@meteoritesusa.com> wrote: > Hi Sterling, Thanks for the answer, and links. > > Still have a question though. I'm more curious about the angle of descent. > The paper mentions an angle of 45 degrees. > > This seems like a very "safe" guess. Are there any data, or information on > the angle of descent other than in the paper you provided a link to. > > See this crater photo from Google Earth: > http://www.mhcmagazine.com/images/crater.jpg > > The crater is not perfectly round as would be expected from an impactor > coming in at a sharper angle.In fact the crater is more elliptical in shape. > It appears as if the impactor hit at an angle quite a bit shallower than 45 > degrees. > > Is it possible the impactor came in at a shallower angle? > > Regards, > Eric > > > On 9/10/2010 1:34 AM, Sterling K. Webb wrote: >> >> Eric, List, >> >> That is the conclusion of the 2005 paper in "Nature" by >> Melosh and Collins. Their computer models suggest it >> fragmented and came in as a swarm of pieces, much >> slowed by the atmosphere. >> >> Here's two popular articles: >> >> http://news.nationalgeographic.com/news/2005/03/0310_050310_meteorcrater.html >> and >> http://www.astronomy.com/asy/default.aspx?c=a&id=2965 >> >> Here's original paper: >> http://amcg.ese.ic.ac.uk/~gsc/publications/articles/download/article7.pdf >> >> Well, one page from Nature, Vol. 434, 10 March, 2005. >> >> >> >> Sterling K. Webb >> >> --------------------------------------------------------------------------------- >> ----- Original Message ----- From: "Meteorites USA" >> <e...@meteoritesusa.com> >> To: "Meteorite-list" <meteorite-list@meteoritecentral.com> >> Sent: Thursday, September 09, 2010 10:44 AM >> Subject: [meteorite-list] Meteor Crater Impactor? >> >> >>> Hi List, >>> >>> Can someone tell me the proposed/accepted angle of descent of the >>> asteroid which formed Meteor Crater in AZ? >>> >>> Wikipedia has the impactor at 50 meters across, and velocity at 12.8 >>> km/s. Is this accurate? >>> >>> Eric >>> ______________________________________________ >>> Visit the Archives at >>> http://www.meteoritecentral.com/mailing-list-archives.html >>> Meteorite-list mailing list >>> Meteorite-list@meteoritecentral.com >>> http://six.pairlist.net/mailman/listinfo/meteorite-list >> >> > ______________________________________________ > Visit the Archives at > http://www.meteoritecentral.com/mailing-list-archives.html > Meteorite-list mailing list > Meteorite-list@meteoritecentral.com > http://six.pairlist.net/mailman/listinfo/meteorite-list > ______________________________________________ Visit the Archives at http://www.meteoritecentral.com/mailing-list-archives.html Meteorite-list mailing list Meteorite-list@meteoritecentral.com http://six.pairlist.net/mailman/listinfo/meteorite-list
