Discovered by C. H. F. Peters, 1878 Minor planet category Main belt (Hilda) Aphelion 4.6480 AU (695.33 Gm) Discovered 22 September 1878 Orbits Sun Asteroid group Hilda family | Discovery date 22 September 1878 Observation arc 121.44 yr (44357 d) Perihelion 3.3248 AU (497.38 Gm) Inclination 6.1772° Discovery site Litchfield Observatory | |
Discoverer Christian Heinrich Friedrich Peters Similar 188 Menippe, 196 Philomela, 165 Loreley, 167 Urda, 135 Hertha | ||
190 Ismene is a very large main belt asteroid. It was discovered by German-American astronomer C. H. F. Peters on September 22, 1878, in Clinton, New York, and named after Ismene, the sister of Antigone in Greek mythology.
Being a P-type asteroid, it has a very dark surface. Ismene orbits near the outer edge of the asteroid belt. It is one of the largest members of the Hilda asteroid family, which are locked in 3:2 resonance with the planet Jupiter.
References
190 Ismene Wikipedia(Text) CC BY-SA