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 and may contain water. Ismene orbits near the outer edge of the asteroid belt. It is one of the Hilda asteroids, which are locked in 3:2 resonance with the planet Jupiter.
References
- ↑ Yeomans, Donald K., "190 Ismene", JPL Small-Body Database Browser (NASA Jet Propulsion Laboratory), retrieved 2013-03-25.
- ↑ Warner, Brian D. (December 2007), "Initial Results of a Dedicated H-G Project", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers 34: 113–119, Bibcode:2007MPBu...34..113W.