(278361) 2007 JJ43
| Discovery[1] | |
|---|---|
| Discovered by | Palomar Observatory |
| Discovery date | 14 May 2007 |
| Designations | |
| 2007 JJ43 | |
| TNO Cubewano[2] |
|
| Orbital characteristics[1][3] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 3661 days (10.02 yr) |
| Aphelion | 55.8274 AU (8.35166 Tm) |
| Perihelion | 40.3918 AU (6.04253 Tm) |
| 48.1096 AU (7.19709 Tm) | |
| Eccentricity | 0.16042 |
| 333.70 yr (121884 d) | |
| 338.058° | |
| Inclination | 12.0622° |
| 272.506° | |
| 6.75208° | |
| Earth MOID | 39.374 AU (5.8903 Tm) |
| Jupiter MOID | 35.1616 AU (5.26010 Tm) |
| Physical characteristics | |
| Dimensions | 670±150 km[4] |
| 12.097 h[4] | |
| 20.8[5] | |
| 3.2[6] 3.9[1] |
|
(268361) 2007 JJ43 is a trans-Neptunian object (TNO) orbiting the Sun near the outer edge of the Kuiper belt. Based on how bright it appears, it is a possible dwarf planet.
Its discovery images were taken in 2007, and its absolute magnitude of 4.4 is one of the twenty brightest exhibited by TNOs. Assuming it has a typical albedo, this would make it roughly the same size as Ixion (about 650–800 km diameter). Mike Brown's website lists it as a "highly likely" dwarf planet.[7] Its diameter is 670±150 km.[4] Studies with Kepler suggest that 2007 JJ43 may have irregular surface features or an irregular shape.[8]
Observations by Brown in 2012, using the W. M. Keck Observatory, suggest that (278361) 2007 JJ43 does not have a companion.[9]
As of 2014[update], it is about 41.3 AU from the Sun.[5]
References
- ↑ 1.0 1.1 1.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ AstDys 2007 JJ43 Summary Retrieved: 2012-02-03
- ↑ 4.0 4.1 4.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ A Southern Sky and Galactic Plane Survey for Bright Kuiper Belt Object
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ http://lcogt.net/files/K2SciCon/Robert_Szabo-Szabo_TNOs_web.pdf
- ↑ Lua error in package.lua at line 80: module 'strict' not found. (moonless)
