[meteorite-list] Mammoth Stew, just right

From: lebofsky at lpl.arizona.edu <lebofsky_at_meteoritecentral.com>
Date: Tue, 18 Dec 2007 17:30:06 -0700 (MST)
Message-ID: <3710.>

Hi all:

I am not an expert in this subject, so maybe I should not say anything
(but I will anyway).

When something "just misses" the Earth, its orbit will get changed. I
would assume similar to Apophis, in 2029, that there is a very small
chance that a close approach would lead to an even closer approach in the
future, while it is more likely that the close approach will "send it on
its way," never to darken our doorstep again!


PS See what the close approach of Rosetta did for it

On Tue, December 18, 2007 10:23 am, E.P. Grondine wrote:
> Hi Sterling, Larry, all -
> I'm feeling a bit thick headed today, so I'm going to
> argue for a lower Earth impact rate again.
> It seems to me that another problem with all of these
> crater models is their assumption that an impactor is either going to hit
> or miss. It seems to me that in the real world, the gravitational effects
> of the Earth+Moon system should draw items in, gradually
> changing their orbits from those passing near to ones which intersect.
> This should mean multiple passes
> before impact, many of them near the Earth, or in other words, very near or
> onto the Moon.
> good hunting all, E.P. Grondine
> PS - I think we all remember the unusual Canadian
> meteorite laws, and the sorry situation which occurred in recovering the
> Tagish Lake fall. This means an
> adventurous time for anyone going after the mammoth pepperer, though
> certainly nothing to produce as exciting accounts as South America.
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Received on Tue 18 Dec 2007 07:30:06 PM PST

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