(471288) 2011 GM27

(471288) 2011 GM27
Discovery[1]
Discovery siteLa Silla Obs. (809)
Discovery date2 April 2011
Designations
(471288) 2011 GM27
TNO · cubewano[2]
Orbital characteristics[3]
Epoch 1 July 2021 (JD 2459396.5)
Uncertainty parameter 2
Observation arc14.08 yr (5,141 d)
Aphelion44.638 AU
Perihelion42.363 AU
43.500 AU
Eccentricity0.0261
286.91 yr (104,794 d)
98.325°
0° 0m 12.24s / day
Inclination13.028°
257.25°
194.69°
Physical characteristics
443 km (est.)[2]
460 km (est.)[4]
0.06 (est.)[4]
0.09 (est.)[2]
5.32[3]

(471288) 2011 GM27 (provisional designation 2011 GM27) is a trans-Neptunian object (TNO) in the Kuiper belt, classified as a hot classical Kuiper belt object.[2] It was discovered on 2 April 2011, at ESO's La Silla Observatory in Chile.[1] With an absolute magnitude of 5.32,[3] a geometric albedo of between 0.06 to 0.09 (a typical value) would mean it has a diameter of about 450 kilometers (280 mi).[2]

2011 GM27 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.[3]

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.[5]

  1. ^ a b Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ a b c d e Cite error: The named reference johnstonsarchive was invoked but never defined (see the help page).
  3. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Brown-dplist was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference precovery was invoked but never defined (see the help page).