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65 Cybele
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65 Cybele

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 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]