Dawn At Vesta

After four years in space, NASA's Dawn spacecraft is finally approaching the Main Belt asteroid Vesta. Dawn will go into orbit around Vesta, thoroughly map its surface, and determine its composition.

One of Dawn's first tasks will be to search for a moon or moons orbiting Vesta. A few smaller asteroids are known to have one or two moons, so Vesta, one of the largest asteroids at 330 miles across, could well have company in its travels.