astro.wikisort.org - Asteroid

(523645) 2010 VK₂₀₁, provisional designation 2010 VK₂₀₁, is a trans-Neptunian object and member of the classical Kuiper belt, approximately 500 kilometers (310 miles) in diameter. It was discovered on 1 November 2010, by the Pan-STARRS 1 survey at Haleakala Observatory, Hawaii, United States.[1] It has a rotation period of 7.6 hours.[6] It was numbered in September 2018 and remains unnamed.

(523645) 2010 VK₂₀₁

Discovery[1]
Discovered by	Pan-STARRS 1
Discovery site	Haleakala Obs.
Discovery date	1 November 2010
Designations
MPC designation	(523645) 2010 VK201
Alternative designations	2010 VK201
Minor planet category	TNO[2][3] · KBO (hot)[4] · distant[1]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 3
Observation arc	7.13 yr (2,606 d)
Aphelion	48.065 AU
Perihelion	37.973 AU
Semi-major axis	43.019 AU
Eccentricity	0.1173
Orbital period (sidereal)	282.16 yr (103,060 d)
Mean anomaly	170.71°
Mean motion	0° 0m 12.6s / day
Inclination	28.845°
Longitude of ascending node	156.40°
Argument of perihelion	88.906°
Physical characteristics
Mean diameter	443 km (est.)[4] 501 km (est.)[5] 505 km (calc.)[6]
Synodic rotation period	7.59±0.05 h[7][8]
Geometric albedo	0.10 (assumed)[6]
Spectral type	C (assumed)[6]
Absolute magnitude (H)	4.40±0.07 (SR)[7] 4.6[6] 5.0[1][2][5]

Orbit and classification

Located beyond the orbit of Neptune, 2010 VK₂₀₁ is a non-resonant classical Kuiper belt object (cubewano) of the so-called hot population, which have higher inclinations than those of the cold population.[4] It orbits the Sun at a distance of 38.0–48.1 AU once every 282 years and 2 months (103,060 days; semi-major axis of 43.02 AU). Its orbit has an eccentricity of 0.12 and an inclination of 29° with respect to the ecliptic.[2] The body's observation arc begins with its official discovery observation at Haleakala in November 2010.[1] 2010 VK₂₀₁ has been identified as a member of the Haumea family in a dynamical study led by Proudfoot and Ragozzine in 2019.[9]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 25 September 2018 (M.P.C. 111778).[10] As of 2018, it has not been named.[1]

Physical characteristics

2010 VK₂₀₁ is an assumed carbonaceous body with a relatively low albedo (see below).[6]

Rotation period

In 2011, a rotational lightcurve of 2010 VK₂₀₁ was obtained from photometric observations in the S- and R-band by Susan Benecchi and Scott Sheppard taken with Carnegie's 2.5-meter Irénée du Pont telescope at the Las Campanas Observatory in Chile. Lightcurve analysis gave a rotation period of 7.59±0.05 hours with a brightness amplitude of 0.30 magnitude (U=2).[6][7]

Diameter and albedo

According to Michael Brown and the Collaborative Asteroid Lightcurve Link, 2010 VK₂₀₁ measures 501 and 505 kilometers in diameter, based on an absolute magnitude of 4.6 and 5.0, assuming an albedo of 0.07 and 0.10 for the body's surface, respectively.[4][5] The Johnston's archive estimates a smaller diameter of 443 kilometers.[6]

References

External links

• MPEC 2011-U10 : 2010 VK201, Minor Planet Electronic Circular – Minor Planet Center
• List of Transneptunian Objects, Minor Planet Center
• "Light curves of 32 large trans-Neptunian objects"
• Discovery Circumstances: Numbered Minor Planets (520001)-(525000) – Minor Planet Center
• (523645) 2010 VK201 at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• (523645) 2010 VK201 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (523645) 2010 VK201

(523645) 2010 VK201 ist ein großes transneptunisches Objekt, das bahndynamisch als Cubewano oder als erweitertes Scattered Disc Object eingestuft wird. Aufgrund seiner Größe ist der Asteroid ein Zwergplanetenkandidat.

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- [en] (523645) 2010 VK201

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