Discovered by Marc W. Buie MPC designation (91205) 1998 US43 Observation arc 6314 days (17.29 yr) Orbital period 248 years Orbits Sun | Discovery date 22 October 1998 Aphelion 44.399 AU (6.6420 Tm) Discovered 22 October 1998 Discoverer Marc William Buie | |
Minor planet category Plutino (Trans-Neptunian object) Similar S/2015 (136472) 1, Nix, Hydra, Sun | ||
(91205) 1998 US43, also written as a (91205) 1998 US43 is a plutino, so it has a 2:3 resonance with Neptune, similar to Pluto. It has a perihelion (closest approach to the Sun) at 34.002 AU and an aphelion (farthest approach from the Sun) at 44.220 AU . It is about 116 km in diameter, so it is unlikely to ever be classified as a dwarf planet due to its relatively small size. It was discovered on October 22, 1998, by Marc W. Buie.
References
(91205) 1998 US43 Wikipedia(Text) CC BY-SA