Solar System

The Solar System is a star system dominated by the Sun.

Its known orbital bodies include:
 * Mercury
 * Venus
 * Earth, and its moon, the Moon.
 * Mars
 * The asteroid belt, including Ceres, Juno, and Pallas
 * Jupiter, and its moon Io
 * Saturn, and its moon Titan
 * Uranus
 * Neptune
 * Pluto and its moon Charon
 * Chaos

The Tenth Planet sounds like it belongs to the Solar System, but is actually located on the fringes of the Milky Way.