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Minor planet.

Pluto was recently downgraded to one. IAU calls them "dwarf planets"

If a dwarf planet is outside the orbit of Neptune, guess what?Plutoids are celestial bodies in orbit around the Sun at a distance greater than that of Neptune that have sufficient mass for their self-gravity to overcome rigid body forces so that they assume a hydrostatic equilibrium (near-spherical) shape, and that have not cleared the neighbourhood around their orbit."

This sub-category includes Pluto, Haumea, Makemake and Eris.

(wikipedia)

Therefore, minor planet is the answer. Under minor planet are "dwarf planets" which are rounded, but don't clear their neighborhood. Under "dwarf planets" are Plutoids. So if you refer to Pluto, it is all three.

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12y ago

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