212 Medea
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Discovery
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| Discovered by | Johann Palisa |
| Discovery date | February 6, 1880 |
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Designations
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| Named after | Medea |
| Alternate name(s) | 1930 FW |
| Minor planet category |
Main belt |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 518.201 Gm (3.464 AU) |
| Perihelion | 413.154 Gm (2.762 AU) |
| Semi-major axis | 465.677 Gm (3.113 AU) |
| Eccentricity | 0.113 |
| Orbital period | 2005.994 d (5.49 a) |
| Average orbital speed | 16.88 km/s |
| Mean anomaly | 356.798° |
| Inclination | 4.265° |
| Longitude of ascending node | 313.697° |
| Argument of perihelion | 99.624° |
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Physical characteristics
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| Dimensions | 136.0 km |
| Mass | unknown |
| Mean density | unknown |
| Equatorial surface gravity | unknown |
| Escape velocity | unknown |
| Rotation period | 10.12 h |
| Albedo | 0.047 |
| Temperature | unknown |
| Spectral type | DCX: |
| Absolute magnitude (H) | 8.28 |
212 Medea is a very large main-belt asteroid.[1] It is rather dark in colour.[citation needed]
It was discovered by Johann Palisa on February 6, 1880, in Pola, and was named after Medea, a figure in Greek mythology.[2]
Lightcurve data has also been recorded by observers at the Antelope Hill Observatory, which has been designated as an official observatory by the Minor Planet Center.[3]
[edit] References
- ^ JPL Small-Body Database Browser
- ^ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
- ^ Lightcurve Results
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
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