| Discovery date 17 April 1999 Minor planet category TNO 4:7 resonance Aphelion 49.013 AU (7.3322 Tm) Orbital period 293 years Absolute magnitude 7.6 | MPC designation (118378) 1999 HT11 Observation arc 5881 days (16.10 yr) Perihelion 38.894 AU (5.8185 Tm) Discovered 17 April 1999 | |
| Discovered by Kitt Peak National Observatory Discovery site Kitt Peak National Observatory Minor planet categories Trans-Neptunian object, Resonant trans-Neptunian object Similar (15788) 1993 SB, S/2000 (1998 WW31) 1, 53311 Deucalion | ||
(118378) 1999 HT11, also written as (118378) 1999 HT11, is a trans-Neptunian object (TNO) in a 4:7 orbital resonance with Neptune. It has a perihelion (closest approach to the Sun) at 38.858 AU and an aphelion (farthest approach from the Sun) at 49.231 AU. It is about 146 km in diameter. It was discovered on April 17, 1999, at Kitt Peak National Observatory, Arizona.
References
(118378) 1999 HT11 Wikipedia(Text) CC BY-SA