(65407) 2002 RP120
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Discovery
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| Discovered by | Brian A. Skiff/LONEOS |
| Discovery date | September 4, 2002 |
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Designations
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| Alternate name(s) | none |
| Minor planet category |
Damocloid asteroid, Scattered disk object |
| Epoch April 10, 2007 (JD 2454200.5) | |
| Aphelion | 106.71 AU (16366.658 Gm) (Q) |
| Perihelion | 2.466 AU (369.948 Gm) (q) |
| Semi-major axis | 54.590 AU (8368.303 Gm) (a) |
| Eccentricity | 0.9548 |
| Orbital period | 403.35 a (147,324.96 d) |
| Average orbital speed | 3.98 km/s |
| Mean anomaly | 4.024° |
| Inclination | 119.10° |
| Longitude of ascending node | 39.212° |
| Argument of perihelion | 357.86° |
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Physical characteristics
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| Dimensions | 14.6 km[1] |
| Mass | 3.1×1015 kg |
| Rotation period | 200 h (8.33 d)[1] |
| Albedo | 0.098[1] |
| Temperature | ~37 K |
| Absolute magnitude (H) | 12.113[1] |
(65407) 2002 RP120 (also written (65407) 2002 RP120) holds the distinction of being the most eccentric of the numbered asteroids (as of July 2004). It is also a member of the very exclusive group of retrograde asteroids, which has only two numbered members (the other one is 20461 Dioretsa). Its classification is uncertain, as it is at once a Damocloid (a highly eccentric, highly inclined object likely to be an extinct comet) and a scattered-disc object (a trans-Neptunian object with a very eccentric orbit, probably ejected from the ecliptic by Neptune).
[edit] References
- ^ a b c d e "JPL Small-Body Database Browser: 65407 (2002 RP120)". http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2002RP120. Retrieved 2008-02-06.
[edit] External links
- Orbital simulation from JPL (Java)
- Horizons Ephemeris
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