(523643) 2010 TY 53

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Asteroid
(523643) 2010 TY 53
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type TNO - Centaur ,
"Distant Object"
Major semi-axis 38.826  AU
eccentricity 0.457
Perihelion - aphelion 21,066 AU - 56,586 AU
Inclination of the orbit plane 22.5 °
Length of the ascending node 111.2 °
Argument of the periapsis 3.4 °
Time of passage of the perihelion January 2, 2043
Sidereal period 241 a 11.1 M
Mean orbital velocity 4.741 km / s
Physical Properties
Medium diameter approx. 329 km
Albedo 0.08-0.10
Absolute brightness 5.34 ± 0.03 - 5.8 mag
Spectral class C.
history
Explorer Pan-STARRS
Date of discovery 4th August 2010
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(523643) 2010 TY 53 is a large trans-Neptunian object , which is classified dynamically as a centaur crossing Neptune orbit . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2010 TY 53 was discovered on August 4, 2010 by a team of astronomers as part of the Pan-STARRS project at the Haleakalā Observatory ( Maui ). The discovery was made after the confirmation by the Haleakala-Faulkes Telescope North and the Astronomical Research Observatory ( Illinois announced) September 10, 2011, the asteroid was on 25 September 2018 the IAU , the Minor Planet -number 523643 .

After its discovery in 2010, TY 53 could be identified on photos taken as part of the Near Earth Asteroid Tracking Program (NEAT) at the Palomar Observatory ( California ) going back to October 7, 2004, thus changing its observation period extend six years to calculate its orbit more accurately. Since then, the planetoid has been observed through various earth-based telescopes. In October 2018 there were a total of 184 observations over a period of 14 years. The last observation so far was again carried out in January 2018 at the Pan-STARRS telescope. (As of March 24, 2019)

properties

Orbit

2010 TY 53 orbits the sun in 241.93 years in a strongly elliptical orbit between 21.06  AU and 56.59 AU from its center. The orbital eccentricity is 0.457, the orbit is inclined 22.46 ° with respect to the ecliptic . The planetoid is currently 29.28 AU from the Sun. He will next pass through perihelion in 2043, so the last perihelion should have occurred in 1801.

Both Marc Buie ( DES ) and the Minor Planet Center classify the planetoid as a centaur ; the latter also generally lists it as a "distant object" .

size

A diameter of 329 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.8  m . Based on this diameter, the total surface area is around 340,000 km 2 . The apparent magnitude of 2010 TY 53 is 20.60  m .

Since it is conceivable that 2010 TY 53 is in hydrostatic equilibrium due to its size and could thus be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown expects that it is at 2010 TY 53 to perhaps is a dwarf planet.

Provisions of the diameter for 2010 TY 53
year Dimensions km source
2013 304.46 LightCurve DataBase
2018 321.0 Johnston
2018 329.0 Brown
The most precise determination is marked in bold .

See also

Web links

Individual evidence

  1. ^ A b Marc W. Buie : Orbit Fit and Astrometric record for 523643 . SwRI (Space Science Department). Retrieved March 24, 2019.
  2. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 24, 2019.
  3. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Accessed March 24, 2019.
  4. ↑ a b c (523643) 2010 TY53 at the IAU Minor Planet Center (English) Accessed March 24, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ S. Benecchi, S. Sheppard : Light Curves of 32 Large Transneptunian Objects (PDF) . In: The Astronomical Journal . 145, No. 5, January 24, 2013, p. 124, 19. arxiv : 1301.5791 . bibcode : 2013AJ .... 145..124B . doi : 10.1088 / 0004-6256 / 145/5/124 .
  7. ↑ a b LCDB Data for (523643) . MinorPlanetInfo. 2013. Accessed March 24, 2019.
  8. ↑ MPC : MPEC 2011-R36: 2010 TY53 . IAU . September 10, 2011. Accessed March 24, 2019.
  9. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 24, 2019. Reference there: MPC 111778
  10. ↑ (523643) 2010 TY53 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 24, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  11. ↑ MPC : MPEC 2010-S44: Distant Minor Planets (2010 OCT.11.0 TT) . IAU . September 25, 2010. Accessed March 24, 2019.
  12. ↑ (523643) 2010 TY53 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  13. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 24, 2019.