(470308) 2007 JH43
Trans-Neptunian object
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(470308) 2007 JH43 (provisional designation 2007 JH43) is a trans-Neptunian object in the outer regions of the Solar System, approximately 500 kilometers in diameter. It was discovered on 10 May 2007, by the U.S. Palomar Observatory in California. The team of unaccredited astronomers at Palomar consisted of Megan E. Schwamb, Michael E. Brown and David L. Rabinowitz.[2]
| Discovery[1] | |
|---|---|
| Discovered by | Palomar Obs. Unaccredited: M. E. Schwamb M. E. Brown D. L. Rabinowitz |
| Discovery site | Palomar Obs. |
| Discovery date | 10 May 2007 |
| Designations | |
| 2007 JH43 | |
| TNO[1][2] Scat-Near (DES)[3] | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 3 | |
| Observation arc | 31.34 yr (11,446 days) |
| Earliest precovery date | 7 March 1984 |
| Aphelion | 40.566 AU (6.0686 Tm) |
| Perihelion | 38.612 AU (5.7763 Tm) |
| 39.589 AU (5.9224 Tm) | |
| Eccentricity | 0.0247 |
| 249.10 yr (90,983 days) | |
| 177.14° | |
| 0° 0m 14.4s / day | |
| Inclination | 18.129° |
| 64.584° | |
| 4.7053° | |
| Known satellites | 0 |
| Physical characteristics | |
| Dimensions | 505 km (assumed)[4] 529.08 km (calculated)[5] |
| 0.09 (assumed)[4] 0.10 (assumed)[5] | |
| C[5] | |
| 4.49±0.05 (S)[6] 4.82[1][5] | |
The minor planet orbits the Sun at a distance of 38.6â40.6 AU once every 249 years and 1 month (90,983 days). Its orbit has an eccentricity of 0.02 and an inclination of 18° with respect to the ecliptic.[1] The first precovery was taken at the Australian Siding Spring Observatory during the Digitized Sky Survey in March 1984, extending the body's observation arc by 23 years prior to its discovery observation.[2] It came to perihelion around 1888.[1]
2007 JH43 has not yet been imaged by high-resolution telescopes, so it has no known moons. The Hubble Space Telescope is planned to image it in 2026, which should determine if it has significantly sized moons.[7]
Orbital classification
The Minor Planet Center lists 2007 JH43 as a trans-Neptunian object or a distant object in the Kuiper belt.[2][8] The Deep Ecliptic Survey currently shows it as a scattered object, based on a 10-million-year integration of the orbit.[3]
