65 Cybele
Encyclopedia : 6 : 65 : 65C : 65 Cybele
| Orbital characteristics [1] | |
|---|---|
| Orbit type | Main belt (Cybelian) |
| Semimajor axis | 3.436 AU |
| Perihelion distance | 3.077 AU |
| Aphelion distance | 3.794 AU |
| Orbital period | 6.37 years |
| Inclination | 3.55° |
| Eccentricity | 0.104 |
| Physical characteristics [1] | |
| Diameter | 237.3 km |
| Rotation period [3] | 4.041 hours |
| Spectral class | C |
| Abs. magnitude | 6.62 |
| Albedo [4] | 0.071 |
| History [2] | |
| Discoverer | E. W. Tempel, 1861 |
65 Cybele (sib'-a-lee) is one of the largest asteroids in the main belt. The Cybelian 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 Ernst Tempel and named after Cybele the earth goddess.
First Cybelian stellar occultation 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, a hint of a possible 11 km wide satellite was detected. [link]
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