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Discovery
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|---|---|
| Discovered by | M. E. Schwamb M. E. Brown D. L. Rabinowitz |
| Discovery date | May 10, 2007 |
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Designations
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| MPC designation | 2007 JH43 |
| Minor planet category |
Plutino (MPC)[1] SDO (DES)[2] |
| Epoch November 30, 2008 | |
| Aphelion | 40.554 AU (Q) |
| Perihelion | 38.576 AU (q) |
| Semi-major axis | 39.565 AU (a) |
| Eccentricity | 0.02499 (quasi-circular) |
| Orbital period | 248.88 yr |
| Mean anomaly | 174.15° (M) |
| Inclination | 18.131° |
| Longitude of ascending node | 64.607° |
| Argument of perihelion | 356.99° |
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Physical characteristics
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| Dimensions | ~500 km (assumed)[4] |
| Albedo | 0.09 (assumed) |
| Absolute magnitude (H) | 4.7[3] |
2007 JH43, also written as 2007 JH43, is a trans-Neptunian object with an absolute magnitude of 4.7.[3] This may qualify it as a small dwarf-planet candidate. It came to perihelion around 1888.[3]
Assuming a generic TNO albedo of 0.09, it is about 500 km in diameter.[4]
It has been observed 32 times over 7 oppositions with precovery images back to 1984.[3]
As of 2009, the Minor Planet Center (MPC) lists 2007 JH43 as a plutino (a trans-Neptunian object in 2:3 mean motion resonance with Neptune).[1][3] But The Deep Ecliptic Survey (DES) currently shows it as a scattered object (borderline ScatExt/ScatNear) based on a 10 million year integration of the orbit.[2]
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