(668643) 2012 DR30
(668643) 2012 DR30 is a trans-Neptunian object and centaur from the scattered disk and/or inner Oort cloud, located in the outermost region of the Solar System. The object with a highly eccentric orbit of 0.99 was first observed by astronomers with the Spacewatch program at Steward Observatory on 31 March 2009. It measures approximately 188 kilometers (120 miles) in diameter.
2012 DR30 in a precovery image taken by the Sloan Digital Sky Survey in 2000 | |
| Discovery | |
|---|---|
| Discovered by | Spacewatch |
| Discovery site | Kitt Peak Obs. |
| Discovery date | 31 March 2009 (first observed only) |
| Designations | |
MPC designation | 2012 DR30 |
Alternative designations |
|
Minor planet category | |
| Orbital characteristics | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 1 | |
| Observation arc | 14.72 yr (5,375 d) |
| Aphelion | 3192 AU 2049 AU (barycentric) |
| Perihelion | 14.5 AU |
Semi-major axis | 1603.44 AU 1032 AU (barycentric) |
| Eccentricity | 0.9909 |
Orbital period (sidereal) | 64207 yr 33100 yr (barycentric) |
Mean anomaly | 0.0453° |
Mean motion | 0° 0m 0s / day |
| Inclination | 77.986° |
Longitude of ascending node | 341.48° |
| ≈ 16 March 2011 | |
| 195.57° | |
| Jupiter MOID | 9.311 AU |
| Saturn MOID | 5.45 AU |
| Uranus MOID | 3.32 AU |
| TJupiter | 0.9860 |
| Physical characteristics | |
Mean diameter | |
| |
| |
| 19.9 | |
| 7.1 | |
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