Similar, but smaller than planets
They form tails when they pass through the inner Solar System
Most of them orbit the Sun in an area between Mars and Jupiter
They are irregular in shape
Unlike planets, they have not cleared the area in which they orbit
They lose matter when they pass close to the Sun
Made up of rocks and metals
They can be from a few meters to several hundreds meters wide
Long-period ones, orbit the Sun in the Oort Cloud
Consist of rocks, ice and dust
Eros, Pluto and Ceris are 3 of them
They orbit the Sun in an area called belt
They have a centre called nucleus
Their orbit has a different inclination compared to planets' orbit.
Spherical bodies
