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Discovery
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| Discovered by | Chadwick A. Trujillo, David C. Jewitt and Jane X. Luu |
| Discovery date | October 12, 1996 |
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Designations
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| MPC designation | (19308) 1996 TO66 |
| Alternate name(s) | none |
| Minor planet category |
TNO (weak eighth-order 19:11 resonance)?[1] |
| Epoch December 31, 2006 (JD 2454100.5) | |
| Aphelion | 7251.168 Gm (48.471 AU) |
| Perihelion | 5677.589 Gm (37.952 AU) |
| Semi-major axis | 6464.378 Gm (43.212 AU) |
| Eccentricity | 0.122 |
| Orbital period | 103752.953 d (284.06 a) |
| Average orbital speed | 4.51 km/s |
| Mean anomaly | 124.299° |
| Inclination | 27.460° |
| Longitude of ascending node | 355.236° |
| Argument of perihelion | 240.207° |
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Physical characteristics
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| Dimensions | 200 km[2][3] (<902km)[4] |
| Mass | 3.8-44×1019? kg |
| Mean density | 2.0? g/cm3 |
| Sidereal rotation period |
0.2604 d (6.250 h) |
| Albedo | 0.7 (assumed) |
| Spectral type | (Neutral) B-V=0.68, V-R=0.39[5] B-V=0.74; V-R=0.38[6] |
| Absolute magnitude (H) | 4.56 |
(19308) 1996 TO66 (also written (19308) 1996 TO66) is a trans-Neptunian object. It was discovered in 1996 by Chadwick A. Trujillo, David C. Jewitt and Jane X. Luu.
Based on their common pattern of IR water-ice absorptions and neutral visible spectrum,[7] and the clustering of their orbital elements, the KBOs (19308) 1996 TO66, (24835) 1995 SM55, (55636) 2002 TX300, (120178) 2003 OP32, and (145453) 2005 RR43 appear to be collisional fragments broken off the dwarf planet Haumea.
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