Pluto

Pluto is a dwarf planet, the largest Plutino and a trans-Neptunian object in the outer solar system. Pluto used to be considered the ninth planet, but on 24 August 2006 astronomers voted to reclassify it[1].

It has three natural satellites: Charon is the largest, and two smaller ones, Hydra and Nix, have only recently been discovered.

Pluto is not included in the standard Orbiter distribution, but an addon can be downloaded from Orbithangar.

Further information at Wikipedia: [2]

edit Natural satellites of Pluto
Charon - Hydra - Nix

edit The Solar System
Central star	Sun (Sol)
Planets	Mercury - Venus - Earth - Mars - Jupiter - Saturn - Uranus - Neptune
Natural satellites	Moon - Phobos - Deimos - Io - Europa - Ganymede - Titan - more...
Add-ons	Planets - Dwarf Planets - Small objects - Natural satellites - Alternative star systems