Asteroid Orbits

(b) Actual positions of all known asteroids at Jupiter’s orbit or closer. The locations of the
belt asteroids are indicated by green dots. Objects passing closer than 1.3 AU to the Sun are shown by red circles.
Objects observed at least twice are indicated by filled circles, and objects seen only once are indicated by outline
circles. Jupiter’s Trojan asteroids are deep blue squares. Comets are filled and unfilled light-blue squares. Although
the asteroids appear packed together in this drawing, they are typically millions of kilometers apart. The small scale
here is deceiving!