[meteorite-list] NEO orbits

From: Graham Ensor <graham.ensor_at_meteoritecentral.com>
Date: Mon, 25 Feb 2013 19:21:18 +0000
Message-ID: <CAJkn+ka_AWwnWkn_2qMJuAhFdO+hWZ5hpJ+zjwbCLuHB6vLTuA_at_mail.gmail.com>

Thanks Rob....so the named groups at the moment just represent similar
orbiting asteroids which over time have settled into that orbit over
time after they were nudged from the asteroid belt and over time will
likely migrate further for reasons similar to the recent near miss
which has changed it's orbit and caused it to move groups?

Graham

On Mon, Feb 25, 2013 at 7:13 PM, Matson, Robert D.
<ROBERT.D.MATSON at saic.com> wrote:
> Hi Graham,
>
> Keep in mind that asteroid orbits are dynamic, and that most of
> the Apollos, Amors and Atens of today once had their aphelia
> between Mars and Jupiter. Planetary perturbations and resonances
> over the millenia caused those orbits to evolve into earth-crossing
> (or in the case of Amors, earth-approaching) orbits.
>
> --Rob
>
> -----Original Message-----
> From: meteorite-list-bounces at meteoritecentral.com
> [mailto:meteorite-list-bounces at meteoritecentral.com] On Behalf Of Graham
> Ensor
> Sent: Monday, February 25, 2013 11:05 AM
> To: Michael Mulgrew
> Cc: Meteorite list
> Subject: Re: [meteorite-list] NEO types
>
> But the diagram does not show the Aten group's orbit intersecting the
> asteroid belt?.....
>
> Graham
>
Received on Mon 25 Feb 2013 02:21:18 PM PST