|Discovery date 9 October 1869|
Observation arc 146.39 yr (53470 d)
Discovered 9 October 1869
Spectral type C-type asteroid
Discovery site Litchfield Observatory
|Minor planet category Main belt|
Aphelion 3.4971 AU (523.16 Gm)
Named after Felicitas
|Discovered by Christian Heinrich Friedrich Peters|
Perihelion 1.89658 AU (283.724 Gm)
Discoverer Christian Heinrich Friedrich Peters
Similar 188 Menippe, 114 Kassandra, 165 Loreley, 196 Philomela, 135 Hertha
109 Felicitas is a dark and fairly large main-belt asteroid. It was discovered by German-American astronomer C. H. F. Peters on October 9, 1869, and named after Felicitas, the Roman goddess of success. The only observed stellar occultation by Felicitas is one from Japan (March 29, 2003).
During 2002, 109 Felicitas was observed by radar from the Arecibo Observatory. The return signal matched an effective diameter of 89 ± 9 km. This is consistent with the asteroid dimensions computed through other means.