(20108) 1995 QZ9
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- The correct title of this article is (20108) 1995 QZ9. It features superscript or subscript characters that are substituted or omitted because of technical limitations.
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Discovery
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| Discovered by | D. C. Jewitt, J. Chen[1] |
| Discovery date | August 29, 1995 |
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Designations
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| MPC designation | (20108) 1995QZ9 |
| Alternative names | none |
| Minor planet category |
plutino |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 6732.923 Gm (45.007 AU) |
| Perihelion | 5029.726 Gm (33.622 AU) |
| Semi-major axis | 5881.325 Gm (39.314 AU) |
| Eccentricity | 0.145 |
| Orbital period | 90037.419 d (246.51 a) |
| Average orbital speed | 4.73 km/s |
| Mean anomaly | 46.766° |
| Inclination | 19.584° |
| Longitude of ascending node | 188.039° |
| Argument of perihelion | 141.803° |
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Physical characteristics
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| Dimensions | 116 km[2] |
| Mass | 1.6×1018? kg |
| Mean density | 2.0? g/cm³ |
| Equatorial surface gravity | 0.0324? m/s² |
| Escape velocity | 0.0613? km/s |
| Sidereal rotation period |
? d |
| Albedo | 0.10? |
| Temperature | ~44 K |
| Spectral type | ? |
| Absolute magnitude | 7.9 |
(20108) 1995 QZ9, also written (20108) 1995 QZ9, is a trans-Neptunian object (TNO) that resides in the Kuiper belt. It was discovered on August 29, 1995 by David C. Jewitt and Jun Chen at the Mauna Kea Observatory, Hawaii. Since it is in a 3:2 orbital resonance with Neptune similar to Pluto, it has been catigorized as a plutino.
[edit] References
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