Discovery | |
---|---|
Discovered by |
Chadwick Trujillo David Jewitt Jane Luu |
Discovery date | 12 October 1996 |
Designations | |
MPC designation | (19308) 1996 TO66 |
TNO weak eighth-order 11:19 resonance? |
|
Orbital characteristics | |
Epoch 13 January 2016 (JD 2457400.5) | |
Uncertainty parameter 3 | |
Observation arc | 7322 days (20.05 yr) |
Aphelion | 48.375 AU (7.2368 Tm) |
Perihelion | 37.939 AU (5.6756 Tm) |
43.157 AU (6.4562 Tm) | |
Eccentricity | 0.12090 |
283.52 yr (103555 d) | |
137.16° | |
0° 0m 12.515s / day | |
Inclination | 27.4948° |
355.2889° | |
239.07° | |
Earth MOID | 37.0117 AU (5.53687 Tm) |
Jupiter MOID | 33.0091 AU (4.93809 Tm) |
Physical characteristics | |
Dimensions |
200 km (assuming a Haumea-like albedo of 0.7) (<902km) |
7.92 h (0.330 d) | |
Sidereal rotation period
|
7.92 h |
0.7 (assumed) | |
(Neutral) B−V=0.68, V−R=0.39 B−V=0.74; V−R=0.38 |
|
4.5 | |
(19308) 1996 TO66 (also written (19308) 1996 TO66) is a trans-Neptunian object that was discovered in 1996 by Chadwick Trujillo, David Jewitt and Jane Luu. Until 20000 Varuna was discovered, it was the second-largest known object in the Kuiper belt, after Pluto.
Based on their common pattern of IR water-ice absorptions, neutral visible spectrum and the clustering of their orbital elements, the other KBOs (24835) 1995 SM55, (55636) 2002 TX300, (120178) 2003 OP32 and (145453) 2005 RR43 all appear to be collisional fragments broken off of the dwarf planet Haumea.