Pluto has something in its orbit.
Hydra is the outermost known moon of Pluto . Kerberos is a small natural satellite of Pluto , about 12 km in its longest dimension . Nix is a natural satellite of Pluto . Pluto . Pluto has five known moons : Charon ( the largest , with a diameter just over half that of Pluto ) , Styx , Nix , Kerberos , and Hydra .