Asteroid / Comet
Comets
Dirty snowballs from the outer Solar System.
Icy bodies that develop a glowing coma and long tails when warmed by the Sun. Originate from the Kuiper Belt and the distant Oort Cloud.
Observing
Bright comets are unpredictable. When one appears, photograph or sketch it — most are once-in-a-lifetime sights.
See also
Asteroids
Rocky relics of the early Solar System.
Jupiter-family Comet
Comet class, nuclear feature, or particle population in the Solar System.
Nearly Isotropic Comet
Comet class, nuclear feature, or particle population in the Solar System.
Dynamically New Comet
Comet class, nuclear feature, or particle population in the Solar System.
Dynamically Old Comet
Comet class, nuclear feature, or particle population in the Solar System.
Oort Cloud Comet
Comet class, nuclear feature, or particle population in the Solar System.