399 Persephone
From Wikipedia, the free encyclopedia
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Discovery
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| Discovered by | Max Wolf |
| Discovery date | February 23, 1895 |
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Designations
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| Named after | Persephone |
| Alternate name(s) | 1895 BP |
| Minor planet category |
Main belt |
| Epoch 30 January 2005 (JD 2453400.5) | |
| Aphelion | 488.18 Gm (3.263 AU) |
| Perihelion | 426.404 Gm (2.85 AU) |
| Semi-major axis | 457.292 Gm (3.057 AU) |
| Eccentricity | 0.068 |
| Orbital period | 1952.055 d (5.34 a) |
| Average orbital speed | 17.04 km/s |
| Mean anomaly | 204.409° |
| Inclination | 13.082° |
| Longitude of ascending node | 346.609° |
| Argument of perihelion | 189.387° |
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Physical characteristics
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| Dimensions | 49.1 km |
| Mass | ~1.2×1017 kg |
| Mean density | 2.0? g/cm³ |
| Equatorial surface gravity | ~0.0137 m/s² |
| Escape velocity | ~0.0260 km/s |
| Rotation period | unknown |
| Albedo | 0.10? |
| Temperature | ~159 K |
| Spectral type | unknown |
| Absolute magnitude (H) | 9.0 |
399 Persephone is a typical Main belt asteroid.
It was discovered by Max Wolf on February 23, 1895 in Heidelberg.[1]
[edit] References
- ^ Schmadel, Lutz D. (2003). Dictionary of minor planet names. Springer. pp. 48. ISBN 978-3-540-00238-3. http://books.google.com/books?id=KWrB1jPCa8AC&pg=PA48&lpg=PA48&dq=399+Persephone+-wikipedia&source=bl&ots=BFHPcOKaWG&sig=04ouZ-KLhUxustbzXYix91bIvBc&hl=en&ei=kBfJSZ_QHYm4sAOHh7WDAQ&sa=X&oi=book_result&resnum=6&ct=result. Retrieved March 24, 2009.
[edit] External links
- NASA JPL Small-Body Database Browser on 399 Persephone
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