Pluto (Maximum Systema)

Pluto is the largest terrestrial planet in the outer Solar System. It also has the most moons for any known rocky planet.

Moons
Pluto has four known moons. In order of size they are: Proserpina, Cerberus, Hydra, and S/2011 P4. Pluto and Proserpina are sometimes called a double planet system due to their closeness in size, although it was proven that Proserpina orbits Pluto.