Stray asteroids orbiting earth

[andrewmoquin]

How come the satellites of other planets like Neptune or Jupiter that look like rocks are considered moons, but the asteroids that were caught by earth and orbiting it are not considered moons of earth?

[brianb]

but the asteroids that were caught by earth and orbiting it

Which ones?

[Talitha]

Exactly what i was going to ask.. thank you, Brian.

[661-pete]

I suppose you may be thinking of Cruithne. Well, it's debatable whether it 'orbits' Earth at all - rather, think of it as having a separate orbit around the Sun in synchronous lock with the Earth's (as, in a sense, is Venus's orbit).

I don't think there are any others (apart from ersatz space junk, of course ).