Dwarf Planet
Pluto is the largest object in the Kuiper belt, the tenth-most-massive known body directly orbiting the Sun; and the second-most-massive known dwarf planet, after Eris. Like other Kuiper belt objects, Pluto is primarily made of rock and ice, and relatively small, about 1/6 the mass of the Moon and 1/3 its volume. It has an eccentric and highly inclined orbit that takes it from... wikipedia.org