Re: Popular Celestial Mechanics

Stewart Robert Hinsley <{$news$}@meden.demon.co.uk> wrote:
There's a considerable class of objects known as plutinos, that is
objects in the Neptune 3:2 resonance. Some of them are reasonably large,
compared to Pluto. I doubt that plutinos could be held half an orbit
apart, but more than one can be held in the plutino orbital region,
which is more than can be said for the terrestial orbit.

Probably partly because there's no Jupiter-size (or Saturn-size) planet that
we know of _outside_ the Neptune/Pluto orbit to interfere with the resonances
from afar. (The ones _inside_ it can be partly lumped in with the Sun, from
that distance...)

Dave
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