| Discovery[1] | |
|---|---|
| Discovered by | Pan-STARRS1 |
| Discovery site | Haleakala Obs. |
| Discovery date | 14 September 2010 |
| Designations | |
| (523759) 2014 WK509 | |
| TNO[2] · SDO[3] distant[1] | |
| Orbital characteristics[2] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter5[2] · 3[1] | |
| Observation arc | 3.24 yr (1,185 days) |
| Aphelion | 61.579 AU |
| Perihelion | 40.098 AU |
| 50.838 AU | |
| Eccentricity | 0.2113 |
| 362.49 yr (132,399 days) | |
| 271.50° | |
| 0° 0m 9.72s / day | |
| Inclination | 14.542° |
| 41.033° | |
| 135.10° | |
| Physical characteristics | |
Mean diameter | 574 km (est.)[4] 584 km (est.)[3] |
| 0.09 (assumed)[3][4] | |
| 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-STARRSatHaleakala 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]
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]
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]
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]
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| TNO classes |
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| Dwarf planets (moons) |
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| Sednoids |
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