Science Fair Project Encyclopedia
65 Cybele
| Orbital characteristics 1 | |
|---|---|
| Orbit type | Main belt (Cybele ) |
| 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 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 Ernst Tempel and named after Cybele the earth goddess.
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, a hint of a possible 11 km wide satellite was detected. [1]
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Last updated: 10-24-2005 13:43:58
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details