(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
Mean diameter
443 km (est.)[2]
460 km (est.)[4]
0.06 (est.)[4]
0.09 (est.)[2]
5.32[3]

    (471288) 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]

    References

    1. 1 2 "471288 (2011 GM27)". Minor Planet Center. Retrieved 18 July 2021.
    2. 1 2 3 4 5 Johnston, Wm. Robert (18 August 2020). "Asteroids with Satellites Database – (508869) 2002 VT130". Johnston's Archive. Retrieved 18 July 2021.
    3. 1 2 3 4 "JPL Small-Body Database Browser: 471288 (2011 GM27)" (2020-02-04 last obs.). Jet Propulsion Laboratory. Retrieved 18 July 2021.
    4. 1 2 Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 18 July 2021.
    5. ↑ "On the discovery and precovery of Trans-Neptunian Objects from SDSS images". talk.galaxyzoo.org. pp. 1–2. Retrieved 8 March 2015.


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