65 Cybele
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| 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 |
| Mass | ~1.15×1019Kg [1] |
| 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. [2]
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| For other objects and regions, see: asteroid groups and families, binary asteroids, asteroid moons and the Solar system For a complete listing, see: List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names. |
