101_helena | discoverer | james_craig_watson <tsp> james_craig_watson | almamater | university_of_michigan <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 
101 helena was discovered by james craig watson whose alma mater is the university of michigan. mr. watson died in madison. wisconsin.helena was discovered by canadian-american astronomer j. c. watson in 1868