(15820) 1994 TB
Trans-Neptunian object
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(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, in Hawaii.
Discoverydate2 October 1994
(15820) 1994 TB
| Discovery | |
|---|---|
| Discovered by | D. C. Jewitt and J. Chen |
| Discovery date | 2 October 1994 |
| Designations | |
| (15820) 1994 TB | |
| none | |
| TNO (plutino) | |
| Orbital characteristics[1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 5210 days (14.26 yr) |
| Aphelion | 51.81015 AU (7.750688 Tm) |
| Perihelion | 26.95788 AU (4.032841 Tm) |
| 39.38402 AU (5.891766 Tm) | |
| Eccentricity | 0.31551 |
| 247.17 yr (90277.3 d) | |
Average orbital speed | 4.63 km/s |
| 355.418° | |
| 0° 0m 14.356s / day | |
| Inclination | 12.1390° |
| 317.481° | |
| 99.2670° | |
| Earth MOID | 25.9914 AU (3.88826 Tm) |
| Jupiter MOID | 22.0897 AU (3.30457 Tm) |
| TJupiter | 5.237 |
| Physical characteristics | |
| Dimensions | 167 km[2] |
| Mass | 4.9Ã1018? kg |
Mean density | 2.0? g/cm3 |
Equatorial surface gravity | 0.0467? m/s2 |
Equatorial escape velocity | 0.0883? km/s |
| 6.5 h (0.27 d) | |
| ? d | |
| 0.10? | |
| Temperature | ~44 K |
| ? | |
| 7.3 | |
