astro.wikisort.org - Asteroid

(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]

(523759) 2014 WK₅₀₉

Discovery[1]
Discovered by	Pan-STARRS 1
Discovery site	Haleakala Obs.
Discovery date	14 September 2010
Designations
MPC designation	(523759) 2014 WK509
Minor planet category	TNO[2] · SDO[3] distant[1]
Orbital characteristics[2]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 5[2] · 3[1]
Observation arc	3.24 yr (1,185 days)
Aphelion	61.579 AU
Perihelion	40.098 AU
Semi-major axis	50.838 AU
Eccentricity	0.2113
Orbital period (sidereal)	362.49 yr (132,399 days)
Mean anomaly	271.50°
Mean motion	0° 0m 9.72s / day
Inclination	14.542°
Longitude of ascending node	41.033°
Argument of perihelion	135.10°
Physical characteristics
Mean diameter	574 km (est.)[4] 584 km (est.)[3]
Geometric albedo	0.09 (assumed)[3][4]
Absolute magnitude (H)	4.4[1][2] 4.5[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

External links

• List Of Centaurs and Scattered-Disk Objects, Minor Planet Center
• (523759) 2014 WK509 at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• (523759) 2014 WK509 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (523759) 2014 WK509

(523759) 2014 WK509 ist ein großes transneptunisches Objekt, welches bahndynamisch als Scattered Disc Object oder als Detached object eingestuft wird. Aufgrund seiner Größe ist der Asteroid ein Zwergplanetenkandidat.

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- [en] (523759) 2014 WK509

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