(523601) 2003 UY 413

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Asteroid
(523601) 2003 UY 413
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO ,
"Distant Object"
Major semi-axis 47.145  AU
eccentricity 0.21
Perihelion - aphelion 37.232 AU - 57.057 AU
Inclination of the orbit plane 20.7 °
Length of the ascending node 341.2 °
Argument of the periapsis 344 °
Time of passage of the perihelion October 9, 1976
Sidereal period 323 a 8.5 M.
Mean orbital velocity 4.302 km / s
Physical Properties
Medium diameter approx. 373 km
Albedo 0.08-0.09
Absolute brightness 5.4 - 5.6 mag
history
Explorer Michael E. Brown
Chadwick A. Trujillo
David L. Rabinowitz
Date of discovery October 19, 2003
Another name 1996 TC 68
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.

(523601) 2003 UY 413 is a large trans-Neptunian object in the Kuiper belt , which is classified as a scattered disk object (SDO) in terms of orbital dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2003 UY 413 was created on October 19, 2003 by a team of astronomers consisting of Mike Brown ( CalTech ), Chad Trujillo ( Gemini ) and Dave Rabinowitz ( Yale ) as part of the Near Earth Asteroid Tracking Project (NEAT) with the 1.2 m Oschin Schmidt telescope discovered at the Palomar Observatory of the California Institute of Technology (CalTech) in California . The discovery was made on September 1, 2007, along with 2003 IP 413 , 2004 NT 33 , 2005 CA 79 , 2005 CB 79 and 2005 UQ 513 announced the asteroid was on 25 September 2018 the IAU , the Minor Planet -number five hundred and twenty-three thousand six hundred and one .

After its discovery, UY 413 could be identified in 2003 on photos from October 12, 1996, which were taken as part of the Pan-STARRS program at the Steward Observatory ( Kitt-Peak ), thus extending its observation period by seven years calculate its orbit more precisely. At that time the planetoid was given the provisional designation 1996 TC 68 , but it could not be found until it was rediscovered in 2003 and was given the current designation 2003 UY 413 . Since then, the planetoid has been observed through various earth-based telescopes. In November 2018, there were 160 observations over a period of 22 years. The last observation so far was carried out in November 2018 on the second Pan-STARRS telescope (PS2). (As of March 13, 2019)

properties

Orbit

2003 UY 413 orbits the sun in 323.71 years in an elliptical orbit between 37.23  AU and 57.06 AU from its center. The orbit eccentricity is 0.210, the orbit is inclined 20.73 ° to the ecliptic . The planetoid is currently 41.79 AU from the sun. He last passed through perihelion in 1976, so the next perihelion should take place in 2300.

The major semi-axis of 2003 UY 413 is located on the outer edge of the Kuiper belt, the so-called Kuiper cliff (English Kuiper cliff ) at 47 AU.

Marc Buie ( DES ) classifies the planetoid as SDO , while the Minor Planet Center does not have a specific classification; the latter classifies it as a non-SDO and generally as a “distant object” . The Johnston's Archive lists it as "other TNO" , which means it is definitely not a Cubewano or Resonantes KBO .

size

A diameter of 373 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.6  m . Based on this diameter, the total surface area is around 437,000 km 2 . The apparent magnitude of 2003 UY 413 is 21.90  m .

Since it is conceivable that 2003 UY 413 is in hydrostatic equilibrium due to its size and could therefore be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown believes that it is in 2003 UY 413 to perhaps is a dwarf planet.

Determination of the diameter for 2003 UY 413
year Dimensions km source
2018 368.0 Johnston
2018 373.0 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 523601 . SwRI (Space Science Department). Retrieved March 13, 2019.
  2. ↑ a b c (523601) 2003 UY413 at the IAU Minor Planet Center (English) Retrieved March 13, 2019.
  3. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  4. ↑ MPC : MPEC 2007-R02: 2003 UY413, 2003 UZ413, 2004 NT33, 2005 CA79, 2005 CB79, 2005 UQ513 . IAU . September 1, 2007. Accessed March 13, 2019.
  5. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 13, 2019.
  6. ↑ (523601) 2003 UY413 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 13, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  7. ↑ MPC : MPEC 2010-S44: Distant Minor Planets (2010 OCT.11.0 TT) . IAU . September 25, 2010. Retrieved March 13, 2019.
  8. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 13, 2019.
  9. ^ A b Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 13, 2019.
  10. ↑ (523601) 2003 UY413 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  11. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 13, 2019.