[meteorite-list] Mammoth Stew, just right

From: mexicodoug <mexicodoug_at_meteoritecentral.com>
Date: Tue, 18 Dec 2007 18:29:13 -0600
Message-ID: <003b01c841d6$32b700c0$4001a8c0_at_MICASA>

Ed wrote:

"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."

Hello Ed,

Mabe, but the Solar System is a pretty "happening" place, and if it is an
Earth crosser, you are requiring it to be in orbital resonance with Earth,
or for Earth to be in the same place (or something like that), each time.

So, I'd say you're not thick-headed, but that if it misses Earth, it is more
likely to go somewhere else and be subject to other things like the Sun for
Example...

You can't really compare a chance orbit crossing with a stable orbit of an
asteroid-not planet crossing with Jupiter.

Here, this is a fun question you could play around with (I don't need the
answer):

If a comet makes a close pass to Earth once, will it eventually make closer
and closer passes until we collide? Why?

Best wishes and Life
Doug
----- Original Message -----
From: "E.P. Grondine" <epgrondine at yahoo.com>
To: <meteorite-list at meteoritecentral.com>
Sent: Tuesday, December 18, 2007 11:23 AM
Subject: Re: [meteorite-list] Mammoth Stew, just right


> 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 07:29:13 PM PST