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by | Mar 16, 2018 | Hosta

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(523759) 2014 WK509 (provisional designation 2014 WK509) is a trans-Neptunian object in the scattered disc, located in the outermost regions of the Solar System. It was discovered on 14 September 2010, by Pan-STARRS at Haleakala Observatory on the island of Maui, Hawaii, in the United States.[1] The object's diameter has been estimated to measure approximately 600 kilometers.[3][4]

Orbit and classification

2014 WK509 belongs to the scattered disc population. It orbits the Sun at a distance of 40.1–61.6 AU once every 362 years and 6 months (132,399 days; semi-major axis of 50.8 AU). Its orbit has an eccentricity of 0.21 and an inclination of 15° with respect to the ecliptic.[2] The body's observation arc begins on 14 September 2011 at Haleakala, more than 3 years prior to its official first observation.[1] Its orbit still has a high uncertainty.[1][2]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 25 September 2018 (M.P.C. 111779).[5] As of 2018, it has not been named.[1]

Physical characteristics

Based on an absolute magnitude of 4.4,[2] and an assumed albedo of 0.09, the Johnston's archive estimates a mean-diameter of approximately 584 kilometers (363 mi).[3]

As of 2018, no rotational lightcurve of this object has been obtained from photometric observations. The object's rotation period, pole and shape remain unknown.[2]

References

  1. ^ a b c d e f g h "2014 WK509". Minor Planet Center. Retrieved 8 February 2018.
  2. ^ a b c d e f g h "JPL Small-Body Database Browser: (2014 WK509)" (2015-01-21 last obs.). Jet Propulsion Laboratory. Retrieved 8 February 2018.
  3. ^ a b c d e Johnston, Wm. Robert (30 December 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 8 February 2018.
  4. ^ a b c d Michael E. Brown. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 8 February 2018.
  5. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 7 October 2018.

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