|Discovery site La Silla Obs. (809)|
MPC designation 2011 GM27
Observation arc 3308 days (9.06 yr)
|Discovery date 2 April 2011|
Minor planet category TNO · cubewano
Aphelion 45.277 AU (6.7733 Tm)
(471288) 2011 GM27 is a trans-Neptunian object (TNO) in the Kuiper belt. It orbits slightly outside a 3:5 resonance with Neptune, taking 16 years (5.5% of its orbit) longer to orbit the Sun than a body in 3:5 resonance. It was discovered on 2 April 2011 at ESO's La Silla Observatory in Chile. With an absolute magnitude of 5.2, it is probably a dwarf planet, as its diameter has been roughly estimated to be about 450 kilometers based on an assumed geometric albedo of 0.06. It has a Tisserand's parameter relative to Jupiter of 5.771. Precovery observations exist dating back to 2006 in SDSS data.