It will linger at Vesta, the second most massive object in the asteroid belt, until next summer, when it is scheduled to depart for a larger asteroid called Ceres.

WSJ: Asteroid Vesta Gets a Close Study

The "new" Solar System agreed at the IAU's General Assembly has eight planets - Mercury to Neptune - and at least three dwarf planets: Pluto, Eris and the largest asteroid in the Solar System, Ceres.

BBC: NEWS | Science/Nature | Astronomers name 'world of chaos'

But Ceres, a big round asteroid between Mars and Jupiter, might qualify.

NPR: Dwarf Planets May Finally Get Respect

The probe, which launched in 2007, reached Vesta a few weeks ago, and will be spending about a year there before it departs on its three year journey to the dwarf planet Ceres, also located in the asteroid belt.

FORBES: Stunning Photos of Vesta from Dawn

Vesta and Ceres are the two most massive objects in the main asteroid belt.

CNN: While you were working: An asteroid just flew by