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(229762) 2007 UK126 photographed by the UK Schmidt Telescope.
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Discovery[1]
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| Discovered by | M. E. Schwamb M. E. Brown D. L. Rabinowitz |
| Discovery date | October 19, 2007 |
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Designations
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| MPC designation | (229762) 2007 UK126 |
| Minor planet category |
Scattered disc object[2][3] |
| Epoch August 27, 2011 (JD 2455800.5) | |
| Aphelion | 110.30 AU (Q) |
| Perihelion | 37.68 AU (q) |
| Semi-major axis | 74.15 AU (a) |
| Eccentricity | 0.4923 |
| Orbital period | 638.76 a |
| Mean anomaly | 340.66° (M) |
| Inclination | 23.35918° |
| Longitude of ascending node | 131.1496° |
| Argument of perihelion | 345.83° |
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Physical characteristics
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| Dimensions | 748 km[5] 530–1190 km[4][6] 919 km[7] |
| Albedo | 0.15[5] |
| Apparent magnitude | 20.8[1] |
| Absolute magnitude (H) | 3.4[4] |
(229762) 2007 UK126, also written as (229762) 2007 UK126, is a scattered disc object (SDO) with a bright absolute magnitude of 3.4.[4] This qualifies it as one of the largest dwarf-planet candidates. As of August 2011[update], Mike Brown lists it as a highly likely dwarf planet.[5]
Its eccentricity of 0.49 suggests that it was gravitationally scattered onto its eccentric orbit. It will come to perihelion around 2046.[4]
It has been observed 58 times over 9 oppositions with precovery images back to 1982.[4]
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