2011_GM27

<span class="nowrap">(471288) 2011 GM<sub>27</sub></span>

(471288) 2011 GM27

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(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]

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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]
    "471288 (2011 GM27)". Minor Planet Center. Retrieved 18 July 2021.
  2. [2]
    Johnston, Wm. Robert (18 August 2020). "Asteroids with Satellites Database – (508869) 2002 VT130". Johnston's Archive. Retrieved 18 July 2021.
  3. [3]
    "JPL Small-Body Database Browser: 471288 (2011 GM27)" (2020-02-04 last obs.). Jet Propulsion Laboratory. Retrieved 18 July 2021.
  4. [4]
    Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 18 July 2021.
  5. [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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