Astrophysics (index)

Dwarf Planet

(object orbiting Sun that is not a planet or satellite)

The term Dwarf Planet was coined to apply to solar system objects that were like planets but smaller and more numerous. It is applied to an object massive enough to make it spherical but not massive enough to clear out a lane through which it orbits. Such an object also fits the description of Minor Planet, of which dwarf planet is a subtype.

In particular, the term was coined for Pluto and similar objects when some were discovered. Examples include Ceres, Haumea, Makemake, and Eris. Other observed bodies may fit the description and the probability is there are many more.

(planets,minor,solar system,object type)

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