Subj : Re: Mothers Day
To   : Adept
From : boraxman
Date : Sun May 28 2023 11:48 pm

 Ad> Yeah, that's the rule I'm good with, as it makes sense as a dividing
 Ad> line, because there aren't really weird exceptions. About as weird as
 Ad> it'd get is that something that's more solid would require a bit more
 Ad> mass than something that's looser.
 Ad> 
 Ad> That's not the difference, though -- planets can have terribly elliptical
 Ad> paths, even if Pluto doesn't. But there can't be other similarly-sized
 Ad> objects in the vicinity.
 Ad> 
 Ad> Which makes _some_ amount of sense, because, e.g., Jupiter winds up
 Ad> pulling in or tossing out anything in its vicinity.
 Ad> 
 Ad> But it certainly seems plausible that we'd find planets _somewhere_ that
 Ad> are Earth-sized, but in an asteroid-belt sort of situation.
 Ad> 
 Ad> But I guess we haven't, yet, so the definition could change again at that
 Ad> point.
 Ad> 


Pluto's orbit is a bit irregular in that it crosses the orbit of Neptune.  Which other planet has a highly elliptical orbit?

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