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Discovery
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|---|---|
| Discovered by | D. C. Jewitt and J. Chen |
| Discovery date | October 2, 1994 |
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Designations
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| MPC designation | (15820) 1994 TB |
| Alternate name(s) | none |
| Minor planet category |
TNO (plutino) |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 7728.080 Gm (51.659 AU) |
| Perihelion | 4034.368 Gm (26.968 AU) |
| Semi-major axis | 5881.224 Gm (39.314 AU) |
| Eccentricity | 0.314 |
| Orbital period | 90035.109 d (246.50 a) |
| Average orbital speed | 4.63 km/s |
| Mean anomaly | 342.334° |
| Inclination | 12.137° |
| Longitude of ascending node | 317.378° |
| Argument of perihelion | 99.059° |
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Physical characteristics
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| Dimensions | 167 km[1] |
| Mass | 4.9×1018? kg |
| Mean density | 2.0? g/cm³ |
| Equatorial surface gravity | 0.0467? m/s² |
| Escape velocity | 0.0883? km/s |
| Sidereal rotation period |
? d |
| Albedo | 0.10? |
| Temperature | ~44 K |
| Spectral type | ? |
| Absolute magnitude (H) | 7.1 |
(15820) 1994 TB is a trans-Neptunian object residing in the Kuiper belt. It is in a 3:2 orbital resonance with Neptune similar to Pluto. It was discovered on October 2, 1994 by David C. Jewitt and Jun Chen at the Mauna Kea Observatory, Hawaii.
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