(15820) 1994 TB
(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.
| Discovery | |
|---|---|
| Discovered by | D. C. Jewitt and J. Chen |
| Discovery date | 2 October 1994 |
| Designations | |
MPC designation | (15820) 1994 TB |
Alternative designations | none |
Minor planet category | TNO (plutino) |
| Orbital characteristics | |
| 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) |
Semi-major axis | 39.38402 AU (5.891766 Tm) |
| Eccentricity | 0.31551 |
Orbital period (sidereal) | 247.17 yr (90277.3 d) |
Average orbital speed | 4.63 km/s |
Mean anomaly | 355.418° |
Mean motion | 0° 0m 14.356s / day |
| Inclination | 12.1390° |
Longitude of ascending node | 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 |
| Mass | 4.9×1018? kg |
Mean density | 2.0? g/cm3 |
Equatorial surface gravity | 0.0467? m/s2 |
Equatorial escape velocity | 0.0883? km/s |
Synodic rotation period | 6.5 h (0.27 d) |
Sidereal rotation period | ? d |
| 0.10? | |
| Temperature | ~44 K |
| ? | |
| 7.3 | |
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