101_Helena | discoverer | James_Craig_Watson James_Craig_Watson | almaMater | University_of_Michigan 101_Helena | periapsis | 331683000.0 (kilometres) James_Craig_Watson | nationality | Canada James_Craig_Watson | deathPlace | Madison,_Wisconsin
101 Helena has a periapsis of 331683000.0 kms and was discovered by the Canadian national, James Craig Watson. Watson's alma mater was the University of Michigan and he eventually died in Madison, Wisconsin.