76 Freia
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Discovery
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| Discovered by | Heinrich d'Arrest |
| Discovery date | October 21, 1862 |
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Designations
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| Minor planet category |
Main belt (Cybele) |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 594.715 Gm (3.975 AU) |
| Perihelion | 427.898 Gm (2.860 AU) |
| Semi-major axis | 511.306 Gm (3.418 AU) |
| Eccentricity | 0.163 |
| Orbital period | 2307.979 d (6.32 a) |
| Average orbital speed | 16.00 km/s |
| Mean anomaly | 299.268° |
| Inclination | 2.116° |
| Longitude of ascending node | 204.535° |
| Argument of perihelion | 254.070° |
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Physical characteristics
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| Dimensions | 183.7 km |
| Mass | 6.5×1018 kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | 0.0513 m/s² |
| Escape velocity | 0.0971 km/s |
| Rotation period | ? d |
| Albedo | 0.036 [1] |
| Temperature | ~151 K |
| Spectral type | CP |
| Absolute magnitude | 7.90 |
76 Freia (frye'-ə, IPA: /ˈfraɪə/) is a very large main belt asteroid. It orbits in the outer part of the asteroid belt and is classified as a Cybele asteroid. Its composition is very primitive and it is extremely dark in color. Freia was discovered by the astronomer Heinrich d'Arrest on October 21, 1862 in Copenhagen, Denmark. It was his first and only asteroid discovery. It is named after the goddess Freyja in Norse mythology.
[edit] References
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