52246 Donaldjohanson
52246 Donaldjohanson (provisional designation 1981 EQ5) is a carbonaceous asteroid from the inner regions of the asteroid belt, approximately 8 kilometers (5.0 miles) long and 3.5 kilometers (2.2 miles) at its widest point. It was discovered on 2 March 1981, by American astronomer Schelte Bus at the Siding Spring Observatory in Australia.