But Wikipedia says there isn't really a lower limit to the size of a moon -- if it orbits a planet, it's a moon. Unless we put it there, in which case it's a satellite. http://en.wikipedia.org/wiki/Natural_satellite#The_definitio...
Phobos and Deimos are far smaller.
http://en.wikipedia.org/wiki/Phobos_(moon) http://en.wikipedia.org/wiki/Deimos_(moon)
But Wikipedia says there isn't really a lower limit to the size of a moon -- if it orbits a planet, it's a moon. Unless we put it there, in which case it's a satellite. http://en.wikipedia.org/wiki/Natural_satellite#The_definitio...