101_helena | discoverer | james_craig_watson <tsp> james_craig_watson | almamater | university_of_michigan <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 hera was discovered by james craig watson who studied at the university of michigan and later died of peritonitis.helena was discovered by canadian-american astronomer j. c. watson in 1868