(432949) 2012 HH2
From Infogalactic: the planetary knowledge core
Astronomical Research Institute (H21) discovery animation of 2012 HH2
|
|
| Discovery | |
|---|---|
| Discovered by | T. Vorobjov (H20)[1] |
| Discovery date | 19 April 2012 |
| Designations | |
| MPC designation | 2012 HH2 |
| TNO Centaur (DES)[2] |
|
| Orbital characteristics[1][3] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 5049 days (13.82 yr) |
| Aphelion | 41.045 AU (6.1402 Tm) (Q) |
| Perihelion | 29.183 AU (4.3657 Tm) (q) |
| 35.114 AU (5.2530 Tm) (a) | |
| Eccentricity | 0.16890 (e) |
| 208.08 yr (76002.3 d) | |
| 29.957° (M) | |
| Inclination | 28.559° (i) |
| 56.480° (Ω) | |
| 101.15° (ω) | |
| Earth MOID | 28.3119 AU (4.23540 Tm) |
| Jupiter MOID | 24.4428 AU (3.65659 Tm) |
| Physical characteristics | |
| Dimensions | 170–300 km[1] |
| 6.4[1] | |
(432949) 2012 HH2 is a trans-Neptunian object (TNO) and weak dwarf planet candidate.[4] It was discovered by Tomáš Vorobjov from images taken on the night of April 19, 2012 at the Astronomical Research Observatory (H21). The object has been observed forty-two times[1][3] over two oppositions.[1] It is currently 29.8 AU from the Sun.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Mike Brown, How many dwarf planets are there in the outer solar system?[1]
External links
- MPEC 2012-H36 : DAILY ORBIT UPDATE (2012 APR. 21 UT) (Discovery mention on Daily Orbit Update)
- MPEC 2012-L20 : 2012 HH2 (Revision to MPEC 2012-J31)
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- (432949) 2012 HH2 at the JPL Small-Body Database
