All the eight planets of the solar system move around the sun in fixed paths. These paths are called orbits.
A Satellite is a celestial body that moves around the planets in the same way as the planets move around the sun. Moon is a natural satellite of Earth.
The small pieces of rocks which move around the sun are called meteoroids. Sometimes these meteoroids come near the earth and tend to drop upon it.
Apart from the stars, planets, and satellites, numerous tiny bodies also move around the sun. These bodies are called asteroids or planetoids.