1000_piazzia | formername | 1923 nz1951 ob <tsp> 1000_piazzia | periapsis | 3524970000000 <tsp> 1000_piazzia | epoch | 2015-06-27 <sep> 1000 piazzia, provisional designation 1923 nz, is a carbonaceous background asteroid from the outer region of the asteroid belt, approximately 48 kilometers (30 miles) in diameter it was discovered on 12 august 1923, by german astronomer karl reinmuth at heidelberg observatory in southern germany the c-type asteroid has a rotation period of 95 hours it was named after italian giuseppe piazzi, who discovered 1 ceres 
1000 piazzia (formerly 1923 nz1951 ob). has a periapsis of 352497000000.0 and the epoch date. 2015-06-27.1000 piazzia, provisional designation 1923 ob, is a carbonaceous background asteroid