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 
the dark asteroid 1000 piazzia has a periapsis is 352497000000.0 and it was formerly called 1923 nz1951 ob and its epoch date was on 2015-06-27.1000 piazzia, provisional designation 1923 ob, is a carbonaceous background asteroid