101_Helena | discoverer | James_Craig_Watson 101_Helena | orbitalPeriod | 1516.6700000000003 (days) James_Craig_Watson | nationality | Canada James_Craig_Watson | deathPlace | Madison,_Wisconsin
101 Helena was discovered by James Craig Watson. He was a canadian who died in Madison, Wisconsin. 101 Helena has an orbital period of 1516.6700000000003 (days).