2003 QX 113

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Asteroid
2003 QX 113
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO ,
"Distant Object"
Major semi-axis 49.775  AU
eccentricity 0.252
Perihelion - aphelion 37.256 AU - 62.294 AU
Inclination of the orbit plane 6.8 °
Length of the ascending node 158.1 °
Argument of the periapsis 26.3 °
Time of passage of the perihelion January 25, 1884
Sidereal period 351 a 2.2 M.
Mean orbital velocity 4.187 km / s
Physical Properties
Medium diameter approx. 490 km
Albedo 0.07-0.09
Absolute brightness 4.7 - 5.1 mag
history
Explorer Mauna Kea Observatory
Date of discovery August 31, 2003
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.

2003 QX 113 is a large Trans-Neptunian Object , the web dynamically as scattered disc object is classified. Because of its size, the asteroid is a dwarf planet candidate .

discovery

2003 QX 113 was discovered on August 31, 2003 by a team of astronomers at the Mauna Kea Observatory . The discovery was announced on April 22, 2006.

The observation sheet of the asteroid begins with the official discovery observation on August 31, 2003. In April 2017, a total of 23 observations of 6 oppositions were made over a period of 5 years. The last observation so far was made in May 2008 at the Kitt Peak Observatory . (As of February 22, 2019)

properties

The orbit of 2003 QX 113 (blue) compared to Pluto and the giant planets (white).

Orbit

2003 QX 113 orbits the sun in 351.18 years in an elliptical orbit between 37.26  AU and 62.29 AU from its center. The orbit eccentricity is 0.252, the orbit is 6.75 ° inclined to the ecliptic . In 2017, it exceeded the 60 AU mark and will reach aphelion around 2058. The planetoid is currently 60.21 AU from the sun. He last passed through perihelion in 1884, so the next perihelion should take place in 2235.

Marc Buie ( DES ) classifies the planetoid as an SDO , while the Minor Planet Center initially also lists it as an SDO and now generally as a “distant object” and as a non-SDO.

size

At present, a diameter of about 490 km is assumed, based on a reflectivity of 7% and an absolute brightness of 5.1  m . The apparent magnitude of the 2003 QX 113 is 22.56  m .

Since it can be assumed that 2003 QX 113 is in hydrostatic equilibrium due to its size and must therefore be largely round, it should meet the criteria for classification as a dwarf planet . Mike Brown believes that 2014 FC 69 is likely a dwarf planet. Gonzalo Tancredi made no recommendation in 2010.

Provisions of the diameter for 2003 QX 113
year Dimensions km source
2010 482.0 Tancredi
2018 509.0 Johnston
2018 490.0 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 03QX113 . SwRI (Space Science Department). Retrieved February 22, 2019.
  2. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved February 22, 2019.
  3. ↑ a b c 2003 QX113 at the IAU Minor Planet Center (English) Retrieved February 22, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2006-H29: 45 New Multiple Opposition TNOs . IAU . April 22, 2006. Retrieved February 22, 2019.
  6. ↑ 2003 QX113 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved February 22, 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 February 22, 2019.
  8. ↑ 2003 QX113 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  9. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved February 22, 2019.
  10. ↑ a b Gonzalo Tancredi: Physical and dynamical characteristics of icy “dwarf planets” (plutoids) (PDF) . In: International Astronomical Union (Ed.): Icy Bodies of the Solar System: Proceedings IAU Symposium No. 263, 2009 . 2010. doi : 10.1017 / S1743921310001717 . Retrieved February 22, 2019.
  11. ^ Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved February 22, 2019.