101_helena | discoverer | james_craig_watson <tsp> james_craig_watson | almamater | university_of_michigan <tsp> 101_helena | discovered | 1868-08-15 <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. who discovered 101 helena on 15th august 1868. is a canadian national who attended the university of michigan. he died in madison. wisconsin.helena was discovered by canadian-american astronomer j. c. watson in 1868