asteroid

noun

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 ...”

3. Any member of the taxonomic class Asteroidea; a starfish.