|Taken by the Galileo spacecraft in 1994, it's true that asteroids can have moons.|
But, that's only one asteroid. Surely other asteroids have moons, don't they? Yes, that's true. In 2000, asteroid 762 Pulcova was found to have a moon. In 1978, asteroid 532 Herculina was found to have a moon. These asteroids which have moons are called 'binaries' and an asteroid with three moons is called a 'triple.'
Some triple systems include: asteroid 87 Sylvia with Romulus and Remus (below Pulcova) and 3749 Balam (March 2008). There is at least 100 more which do, so it is quite possible that asteroid 4 Vesta houses a moon or two.
|762 Pulcova and it's moon.|
|87 Sylvia with Romulus and Remus.|
So, as we wait excitedly for Dawn and Vesta to unite, Raymond had an idea for a moon if they found one, commenting "How about Dawn?"