Sol

Sol, (Latin for sun) also known as the Sun, is the only star in the Sol System. It is an average sized star in its main sequence phase, and is the dominant source of light for Earth. According to current definitions, eight planets and five dwarfs planets orbit it, for a total of 13, including the four inner terrestrial planets and the four gas giants, separated by an asteroid belt. Many smaller planetoids also orbit sol, and many of the systems planets possess moons of varying size and number, such as Earth's satellite, Luna.

Trivia
Sol is also an emblem option in Halo 3.