Most of them have a diameter of between 20 to 100 kilometres, a few up to 500 kilometres, but none are larger than Ceres: with its 1000- kilometre ... is the third largest asteroid. It rotates around ...

Its force of gravity is not strong enough to pull in all the many other objects in its orbit around the Sun. Pluto is not very ... including Ceres, which can be found in the asteroid belt.