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Discovery[1]
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| Discovered by | M. E. Brown D. L. Rabinowitz C. A. Trujillo |
| Discovery date | August 30, 2005 |
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Designations
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| MPC designation | 2005 QU182 |
| Minor planet category |
TNO (SDO)[2][3] |
| Epoch February 8, 2011 | |
| Aphelion | 190.75 AU (Q) |
| Perihelion | 37.01 AU (q) |
| Semi-major axis | 113.88 AU (a) |
| Eccentricity | 0.675 |
| Orbital period | 1215.26 yr |
| Mean anomaly | 11.65° (M) |
| Inclination | 14.02° |
| Longitude of ascending node | 78.45° |
| Argument of perihelion | 224.46° |
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Physical characteristics
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| Dimensions | 730 km[5] 530–1186 km[4][6] 884 km[7][8] 919 km[9] |
| Albedo | 0.15[5] |
| Apparent magnitude | 20.6[10] |
| Absolute magnitude (H) | 3.5[4] |
2005 QU182, also written as 2005 QU182, is a trans-Neptunian object 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]
It came to perihelion in 1971,[4] and is currently 49 AU from the Sun.[10]
It has been observed 49 times over 8 oppositions with precovery images back to 1974.[4]
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