101_helena | discoverer | james_craig_watson <tsp> james_craig_watson | stateoforigin | 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 
the discoverer of 101 helena is james craig watson who came from canada. he died in madison. wisconsin.helena was discovered by canadian-american astronomer j. c. watson in 1868