(471288) 2011 GM27

Kuiper belt object July 2021 yes #C2E0FF (471288) 2011 GM 27 La Silla Obs. (809) 2 April 2011 (471288) 2011 GM 27 TNOres 4:7? 1 July 2021 (JD 2459396.5) 2 14.08 yr (5,141 d) 44.638 AU 42.363 AU 43.500 AU 0.0261 286.91 yr (104,794 d) 98.325° 0.0034 ms / day 13.028° 257.25° 194.69° 0 443 km (est.)460 km (est.) 0.06 (est.)0.09 (est.) 5.32 (471288) 2011 GM 27 is a resonant trans-Neptunian object (TNO) in the Kuiper belt. It was discovered on 2 April 2011, at ESO's La Silla Observatory in Chile. With an absolute magnitude of 5.32, a geometric albedo of between 0.06 and 0.09 (a typical value) would mean it has a diameter of about 450 km mi us 2. 2011 GM 27 orbits the Sun at a distance of 42.4–44.6 AU once every 286 years and 11 months (104,794 days; semi-major axis of 43.5 AU). Its orbit has an eccentricity of 0.03 and an inclination of 13° with respect to the ecliptic. 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. Precovery observations exist dating back to 2006 in SDSS data. References 471288 (2011 GM27) Minor Planet Center https://www.minorplanetcenter.net/db_search/show_object?object_id=471288 18 July 2021 2020-02-04 last obs. JPL Small-Body Database Browser: 471288 (2011 GM27) https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2471288 Jet Propulsion Laboratory 18 July 2021 How many dwarf planets are there in the outer solar system? California Institute of Technology Brown Michael E. http://web.gps.caltech.edu/~mbrown/dps.html 18 July 2021 On the discovery and precovery of Trans-Neptunian Objects from SDSS images 1–2 http://talk.galaxyzoo.org/#/boards/BGZ0000007/discussions/DGZ000116c talk.galaxyzoo.org 8 March 2015 Asteroids with Satellites Database – (508869) 2002 VT130 Johnston's Archive 18 August 2020 Johnston Wm. Robert http://www.johnstonsarchive.net/astro/astmoons/am-508869.html 18 July 2021 External links 2471288 471288 471288 (471288) 2011 GM 27 471288 471288 20110402