Are also known as the Minor Planets.

Orbit the Sun mainly between the orbits of Mars and Jupiter.

Usually range in size from 1 kilometer to 1000 kilometers across.

Are difficult to observe because of their small size.

Gaspra (above) and Ida (right) are two known Asteroids. Ceres, Pallas, Juno and Vesta are some other of the larger Asteroids.

Sometimes have moons that orbit them. Notice the small moon that orbits Ida (right).