Astronomy:(523759) 2014 WK509

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(523759) 2014 WK509
Discovery[1]
Discovered byPan-STARRS 1
Discovery siteHaleakala Obs.
Discovery date14 September 2010
Designations
(523759) 2014 WK509
Minor planet categoryTNO[2] · SDO[3]
distant[1]
Orbital characteristics[2]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 5[2] · 3[1]
Observation arc3.24 yr (1,185 days)
|{{{apsis}}}|helion}}61.579 AU
|{{{apsis}}}|helion}}40.098 AU
50.838 AU
Eccentricity0.2113
Orbital period362.49 yr (132,399 days)
Mean anomaly271.50°
Mean motion0° 0m 9.72s / day
Inclination14.542°
Longitude of ascending node41.033°
135.10°
Physical characteristics
Mean diameter574 km (est.)[4]
584 km (est.)[3]
Geometric albedo0.09 (assumed)[3][4]
Absolute magnitude (H)4.4[1][2]
4.5[4]


(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. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 "2014 WK509". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2014+WK509. Retrieved 8 February 2018. 
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 "JPL Small-Body Database Browser: (2014 WK509)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3755575. Retrieved 8 February 2018. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 Johnston, Wm. Robert (30 December 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 8 February 2018. 
  4. ↑ 4.0 4.1 4.2 4.3 Michael E. Brown. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. http://web.gps.caltech.edu/~mbrown/dps.html. Retrieved 8 February 2018. 
  5. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 7 October 2018. 

External links



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