|Discovery date 12 October 1996|
Observation arc 7322 days (20.05 yr)
Discovered 12 October 1996
Discovery site Mauna Kea Observatories
|MPC designation (19308) 1996 TO66|
Aphelion 48.375 AU (7.2368 Tm)
Asteroid family Haumea family
|Discovered by Chadwick Trujillo
Minor planet category TNO weak eighth-order 11:19 resonance?
Discoverers Jane Luu, Chad Trujillo, David C. Jewitt
Similar Solar System, (47171) 1999 TC36, (55636) 2002 TX300, Sun, (84922) 2003 VS2
(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.