385571 Otrera
| Discovery | |
|---|---|
| Discovered by | S. S. Sheppard C. Trujillo |
| Discovery site | Las Campanas Obs. |
| Discovery date | 16 October 2004 |
| Designations | |
| (385571) Otrera | |
Named after | Otrera (Greek mythology) |
| 2004 UP10 | |
| Neptune trojan · L4 centaur · distant | |
| Orbital characteristics | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 4 | |
| Observation arc | 8.97 yr (3,277 days) |
| Aphelion | 30.727 AU |
| Perihelion | 29.327 AU |
| 30.027 AU | |
| Eccentricity | 0.0233 |
| 164.54 yr (60,099 days) | |
| 355.52° | |
| 0° 0m 21.6s / day | |
| Inclination | 1.4334° |
| 34.761° | |
| 3.5334° | |
| Physical characteristics | |
| Dimensions | 74 km (est. at 0.10) 100 km |
| 23.3 | |
| 8.8 | |
385571 Otrera, provisional designation 2004 UP10, is a Neptune trojan leading Neptune's orbit in the outer Solar System. It was discovered by American astronomers Scott Sheppard and Chad Trujillo at Las Campanas Observatory on 16 October 2004. It measures approximately 100 kilometers in diameter and was the second such body to be discovered after 2001 QR322.