65 Cybele
| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt (Cybele asteroid>Cybele) |
| Semimajor axis | AU |
| Perihelion distance | AU |
| Aphelion distance | AU |
| Orbital period | years |
| Inclination | 3.55° |
| Eccentricity | 0.104 |
| Physical characteristics 1 | |
| Diameter | km |
| Rotation period 3 | hours |
| Spectral class | C |
| Abs. magnitude | 6.62 |
| Albedo 4 | 0.071 |
| History 2 | |
| Discoverer | E. W. Tempel, 1861 |
65 Cybele is one of the largest asteroids in the Main belt. The Cybele asteroids are named after it. As a C-type asteroid it is dark in color and carbonaceous in composition.
It was discovered on March 8 1861 by E. W. Tempel.
First stellar occultation by Cybele was observed on October 17, 1979 in the Soviet Union. A diameter of 230 km was derived, closely matching the diameter of 237 km determined by the IRAS satellite.
During the same occultation hints from a possible 11 km wide satellite was detected. [1]