101_helena | averagespeed | 1844 (kilometreperseconds) <tsp> 101_helena | apoapsis | 4410920000 (kilometres) <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 has an average speed of 18.44 kilometres per second and an apoapsis of 441092000.0 kilometres.no information