2012 DR30
| Discovery | |
|---|---|
| Discovered by | Siding Spring Survey |
| Discovery date | February 22, 2012 (March 2009) |
| Designations | |
| MPC designation | 2012 DR30 |
| 2009 FW54 | |
|
Trans-Neptunian object Centaur Oort cloud object Damocloid |
|
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 5375 days (14.72 yr) |
| Aphelion | 2512 ± 5.4 AU (Q) ~2049 AU |
| Perihelion | 14.55098 AU (2.176796 Tm) (q) |
| 1263.5 ± 2.7 AU (a) ~1032 AU |
|
| Eccentricity | 0.98962 (e) |
| 44913 ± 146 yr ~33100 yr |
|
| 0.0329976° (M) | |
| 0.0000187791°/day (n) | |
| Inclination | 77.95284° (i) |
| 341.38873° (Ω) | |
| 195.4113° (ω) | |
| Earth MOID | 13.5911 AU (2.03320 Tm) |
| Jupiter MOID | 9.29574 AU (1.390623 Tm) |
| Physical characteristics | |
| Dimensions | 185 km |
| ~0.08 | |
| B-V = 1.10 | |
| 19.7 | |
| 7.1, 7.1 | |
2012 DR30 (2009 FW54) is a minor planet (trans-Neptunian object or extended centaur) from the scattered disk/Inner Oort cloud. Using an epoch of December 2014, it has the second-largest heliocentric semi-major axis of a minor planet not detected out-gassing like a comet. (2005 VX3 has a larger heliocentric semi-major axis.) 2012 DR30 does have a barycentric semi-major axis of 1032 AU. The epoch of July 2018 will be when 2012 DR30 will have its largest heliocentric semi-major axis of 1644 AU.
2012 DR30 came to perihelion in March 2011 at a distance of 14.5 AU from the Sun (inside the orbit of Uranus). For 2016, it will range from 16.5 AU to 17.3 AU from the Sun. With an absolute magnitude (H) of 7.1, the object has an estimated diameter of 185 km.
With an observation arc of 14.7 years, it has a well constrained orbit. It will not be 50 AU from the Sun until 2047. After leaving the planetary region of the Solar System, 2012 DR30 will have a barycentric aphelion of 2049 AU with an orbital period of 33100 years.
In a 10 million year integration of the orbit, the nominal (best-fit) orbit and both 3-sigma clones remain outside 12.5 AU (qmin) from the Sun.
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