Id47
Id48
101 Helena has a density of 2.0 gram per Cubic centimeters, and an apoapsis of 441092000.0 (kilometres).
James Craig Watson's Alma mater is the University of Michigan and he discovered 101 Helena.
101 Helena | density | 2.0 (gramPerCubicCentimetres) 101 Helena | apoapsis | 441092000.0 (kilometres) 101 Helena | discoverer | James Craig Watson James Craig Watson | alma mater | University of Michigan