101_helena | discoverer | james_craig_watson <tsp> james_craig_watson | almamater | university_of_michigan <tsp> 101_helena | epoch | 2006-12-31 <tsp> james_craig_watson | nationality | canada <tsp> james_craig_watson | deathplace | madison,_wisconsin <sep> helena (minor planet designation: 101 helena) is a large, rocky main-belt asteroid it was discovered by canadian-american astronomer j c watson on august 15, 1868, and was named after helen of troy in greek mythology this object is orbiting the sun with a period of 416 years and an eccentricity of 014 
james craig watson is a canadian national who studied at the university of michigan. he was the discoverer of 101 helena. which has an epoch date of december 31. 2006. watson died in madison wisconsin.helena was discovered by canadian-american astronomer j. c. watson in 1868