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So, most moons would not qualify as the new class of dwarf planets, despite having the size. For example, Luna orbits Earth and is not fully tidally locked, so it wouldn't qualify, despite the size.
Originally posted by Mogget
To be honest, I don't feel comfortable with this definition of the term "planet". If the Pluto-Charon system is defined as a double planet, then I would argue that the Earth-Moon system should be similarly defined. This is because the Moon has one very special orbital property that it does not share with any other large planetary satellite........
It actually orbits the Sun.
You get three for that last, bolded comment of yours, my friend... Last time I checked, the Moon orbits around the Earth. Of course, the Earth, in turn, orbits the Sun, so I suppose in an round-about way you would be correct.
The reason the moon wouldn't qualify is that it's center of gravity lies within Earth. Pluto and Charon are a double planet because thier center of gravity lies in space between the two planets.
Ceres, Pluto, Charon, et al are going to be "dwarf planets."