Asteroids with multiple moons

[Malenfant]

http://space.com/scienceastronomy/050810_asteroid_trio.html

Well there was no particular reason why they couldn't exist, but we've now found a main belt asteroid with two moons...

 

[RandyT0001]

Now we know where the Romulans from Star Trek are from.

 

[Andrew Boulton]

I suppose the low gravity would make it hard for asteroids to keep their moons. The slightest disturbance could upset the system. They might be common, but unstable.