asteroid

noun3

1. •
   A naturally occurring solid object, which is smaller than a planet and a dwarf planet, larger than a meteoroid and not a comet, that orbits a star and often has an irregular shape.
2. •
   In the Solar System, such a body that orbits within the orbit of Jupiter.

   • The orbital planes of asteroids, minor bodies that circle the Sun mainly between the orbits of Mars and Jupiter, are often more tilted ... — 2007
3. •
   Any member of the taxonomic class Asteroidea; a starfish.