C-type asteroid
The largest unequivocally C-type asteroid is 10 Hygiea, although the SMASS classification places the largest asteroid, 1 Ceres, here as well, because that scheme lacks a G-type.
4954 Eric
It is the largest near-Earth asteroid discovered since 3552 Don Quixote in 1983. On 2007 October 11 the asteroid passed from Earth. It currently makes closer approaches to Mars than it does Earth. The asteroid has a rotation period of 12.05 hours.