65 Cybele
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| Orbital characteristics 1 (ftp://ftp.lowell.edu/pub/elgb/astorb.html) | |
|---|---|
| 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 (ftp://ftp.lowell.edu/pub/elgb/astorb.html) | |
| Diameter | 237.3 km |
| Rotation period 3 (http://charlie.psi.edu/pds/) | 4.041 hours |
| Spectral class | C |
| Abs. magnitude | 6.62 |
| Albedo 4 (http://dorothy.as.arizona.edu/DSN/IRAS/index_iras.html) | 0.071 |
| History 2 (http://cfa-www.harvard.edu/iau/lists/NumberedMPs.html) | |
| 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. [1] (http://cfa-www.harvard.edu/iauc/03400/03439.html)
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