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: [email protected] [mailto:[email protected]] 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 ______________________________________________ Visit the Archives at http://www.meteorite-list-archives.com Meteorite-list mailing list [email protected] http://six.pairlist.net/mailman/listinfo/meteorite-list
