astro.wikisort.org - Asteroid

(523643) 2010 TY₅₃, provisional designation 2010 TY₅₃ is a trans-Neptunian object and centaur located in the outermost region of the Solar System. With an absolute magnitude of 5.7, it approximately measures 325 kilometers (200 miles) in diameter. It was discovered on 4 August 2010 by the Pan-STARRS-1 survey at the Haleakala Observatory, Hawaii, in the United States.[1] According to American astronomer Michael Brown, it is "possibly" a dwarf planet.[6]

(523643) 2010 TY₅₃

Discovery[1]
Discovered by	Pan-STARRS 1
Discovery site	Haleakala Obs.
Discovery date	4 August 2010
Designations
MPC designation	(523643) 2010 TY53
Alternative designations	2010 TY53
Minor planet category	TNO[2] · centaur[3][4] distant[1]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 2
Observation arc	13.24 yr (4,835 d)
Aphelion	56.586 AU
Perihelion	21.066 AU
Semi-major axis	38.826 AU
Eccentricity	0.4574
Orbital period (sidereal)	241.93 yr (88,365 d)
Mean anomaly	324.76°
Mean motion	0° 0m 14.76s / day
Inclination	22.461°
Longitude of ascending node	111.23°
Time of perihelion	≈ 13 December 2042[5]
Argument of perihelion	3.4361°
Physical characteristics
Mean diameter	321 km[3] 329 km[6]
Synodic rotation period	n.a.[7]
Geometric albedo	0.08 (est.)[6] 0.09 (est.)[3]
Absolute magnitude (H)	5.7[1][2] 5.8[6]

Orbit and classification

2010 TY₅₃ orbits the Sun at a distance of 21.1–56.6 AU once every 241 years and 11 months (88,365 days; semi-major axis of 38.83 AU). Its orbit has an eccentricity of 0.46 and an inclination of 22° with respect to the ecliptic.[2] The body's observation arc begins with a precovery at Palomar Observatory in October 2004, or almost six years prior to its official discovery observation by Pan-STARRS.[1]

Numbering and naming

This minor planet was numbered by the Minor Planet Center on 25 September 2018 (M.P.C. 111778).[8] As of 2018, it has not been named.[1]

Physical characteristics

Diameter and albedo

According to the Johnston's archive and to Michael Brown, 2010 TY₅₃ measures 321 and 329 kilometers in diameter, based on an absolute magnitude of 5.7 and 5.8 and an assumed standard albedo of 0.09 and 0.08 for the body's surface, respectively.[3][6] As of 2018, no physical characteristics have been determined from photometric observations. The body's rotation period, pole and shape remain unknown.[2][7]

References

External links

• Discovery Circumstances: Numbered Minor Planets (520001)-(525000) – Minor Planet Center
• (523643) 2010 TY53 at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• (523643) 2010 TY53 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (523643) 2010 TY53

(523643) 2010 TY53 ist ein großes transneptunisches Objekt, das bahndynamisch als neptunbahnkreuzender Zentaur eingestuft wird. Aufgrund seiner Größe gehört der Asteroid möglicherweise zu den Zwergplanetenkandidaten.

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- [en] (523643) 2010 TY53

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