121 Hermione Distance from Earth; X Size: about 8 miles long mass: 5.38 ± 0.3 kg composition: mostly carbon.
Abstract: We report on the results of a six-month photometric study of the main- belt binary C-type asteroid 121 Hermione, performed during its.
(121) Hermione and 1 ("LaFayette"). compiled by Wm. Robert Johnston last updated 21 September --Orbital and physical data--. (See this. Asteroid 121 Hermione - ithistory.info