101_helena | discoverer | james_craig_watson <tsp> james_craig_watson | almamater | university_of_michigan <tsp> james_craig_watson | nationality | canada <tsp> james_craig_watson | deathplace | madison_wisconsin <tsp> james_craig_watson | deathcause | peritonitis <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. a canadian. whose alma mater is the university of michigan. he died of peritonitis in madison. wisconsin.helena was discovered by canadian-american astronomer j. c. watson in 1868