20461 Dioretsa
| Discovery | |
|---|---|
| Discovered by | LINEAR |
| Discovery site | Lincoln Lab ETS |
| Discovery date | 8 June 1999 |
| Designations | |
| (20461) Dioretsa | |
| Pronunciation | /daɪ.əˈrɛtsə/ |
Named after | Asteroid (spelled backwards) |
| 1999 LD31 | |
| centaur · damocloid unusual · distant | |
| Symbol | (astrological) |
| Orbital characteristics | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 2 | |
| Observation arc | 2.54 yr (927 d) |
| Aphelion | 45.404 AU |
| Perihelion | 2.4021 AU |
| 23.903 AU | |
| Eccentricity | 0.8995 |
| 116.87 yr (42,686 d) | |
| 59.873° | |
| 0° 0m 30.24s / day | |
| Inclination | 160.43° |
| 297.77° | |
| 103.13° | |
| Jupiter MOID | 0.1907 AU |
| TJupiter | -1.5470 |
| Physical characteristics | |
| 14±3 km | |
| 0.03±0.01 | |
| 13.8 | |
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20461 Dioretsa /daɪ.əˈrɛtsə/ is a centaur and damocloid on a retrograde, cometary-like orbit from the outer Solar System. It was discovered on 8 June 1999, by members of the LINEAR team at the Lincoln Laboratory Experimental Test Site near Socorro, New Mexico, United States. The highly eccentric unusual object measures approximately 14 kilometers (8.7 miles) in diameter. It was named dioretsa, an anadrome of "asteroid".