The sun, the major planets (Mercury, Venus, earth, Mars, Jupiter, Saturn, Uranus, and Neptune) and their natural satellites, the dwarf planets, and the asteroids, the comets, and meteoroids. Over 99% of the mass of the system is concentrated in the sun. The solar system as a whole moves in an approximately circular orbit about the centre of the Galaxy, taking about 2.2 × 108 years to complete its orbit. See Solar System.
http://ssd.jpl.nasa.gov/?bodies Data for the solar system from NASA/JPL