Astrophysics (index)about

Plutoid

(Ice Dwarf)
(Pluto-like dwarf planet)

A Plutoid (or Ice Dwarf, a term more common within science) is a Pluto-like Dwarf Planet. As such, it is icy, round, a Trans-Neptunian Object (orbits beyond Neptune) and a KBO (Kuiper Belt Object)

In addition to Pluto, the known examples are Eris, Haumea, and Makemake.

A similar term, Plutino is defined not by its composition, but by its orbit: like Pluto, having an Orbital Resonance with Neptune. Other than Pluto, they are all small objects. Estimates are there are thousands of Plutinos.


(planets,solar system,object type)
http://en.wikipedia.org/wiki/Plutoid
http://en.wikipedia.org/wiki/Plutino

Referenced by:
Solar System

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