> Do comets count?
The distinction between comets and asteroids is no longer scientifically valid. By composition, comets and outer Solar System bodies are the same. Comets just happen to have orbits that get so close to the Sun they evaporate water and other ices and create a tail. There are intermediate bodies in the asteroid belt and out to about Saturn that give off just a little outgassing, but not enough to create a full tail. "Dead comets" have comet-like orbits, but no longer have any volatiles to outgas, and so are indistinguishable from asteroids otherwise.
The modern way to distinguish these small Solar System bodies is:
- Never got close to the Sun, and still has all the volatiles (water, methane, etc.)
- Sometimes gets close to the Sun, and still boils off volatiles when it does
- Has spent too much time close to the Sun, and has been baked dry.
Those are verbose descriptions, so I like to borrow from steak terminology and call them Raw, Still Juicy, and Overcooked.