(168703) 2000 GP 183

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Asteroid
(168703) 2000 GP 183
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type CKBO ( "Cold" )
"Distant Object"
Major semi-axis 40.1  AU
eccentricity 0.082
Perihelion - aphelion 36.799 AU - 43.402 AU
Inclination of the orbit plane 4.9 °
Length of the ascending node 23.4 °
Argument of the periapsis 221.1 °
Time of passage of the perihelion March 21, 2023
Sidereal period 253 a 11.3 M
Mean orbital velocity 4.665 km / s
Physical Properties
Medium diameter approx. 359 km
Albedo 0.04-0.09
Absolute brightness 6.2 - 6.3 mag
history
Explorer Chadwick A. Trujillo
Jane X. Luu
David C. Jewitt
David J. Tholen
Scott S. Sheppard
Date of discovery April 2, 2000
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.

(168703) 2000 GP 183 is a large trans-Neptunian object in the Kuiper belt , which is classified as Cubewano (CKBO) in terms of railway dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2000 GP 183 was examined on April 2, 2000 by a team of astronomers consisting of Chad Trujillo , Jane Luu , Dave Jewitt , David Tholen and Scott Sheppard with the 3.6 m CFHT telescope at the Mauna Kea Observatory ( Hawaii ) discovered. The discovery was announced on July 22, 2000 together with Borasisi , the planetoid was later given the minor planet number 168703 by the IAU .

The observation arc of the planetoid begins with the official discovery observation on April 2, 2000. Since then, the planetoid has been observed through various earth-based telescopes. In April 2017, a total of 145 observations over a period of 16 years were available. The last observation so far was carried out in April 2017 at the Pan-STARRS telescope (PS1) ( Maui ). (As of March 15, 2019)

properties

Orbit

2000 GP 183 orbits the sun in 253.94 years on a slightly elliptical orbit between 36.80  AU and 43.40 AU from its center. The orbital eccentricity is 0.082, the orbit is inclined 4.91 ° ​​to the ecliptic . Currently, the planetoid is 36.82 AU from the sun. He will next pass perihelion in 2023, so the last perihelion should have occurred in 1769.

Marc Buie ( DES ) classifies the asteroid as a Cubewano , whereby it belongs to the orbital dynamics "cold" classical KBO , 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” .

size

A diameter of 359 km is currently assumed, based on a reflectivity of 4% and an absolute brightness of 6.3  m . Based on this diameter, the total area is around 405,000 km². The apparent magnitude of 2000 GP 183 is 21.91  m .

Since it is conceivable that 2000 GP 183 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 2000 GP 183 to perhaps is a dwarf planet.

2000 GP 183 seems to have a bluish (neutral) coloration, which is why the albedo is assumed to be comparatively low.

Determination of the diameter for 2000 GP 183
year Dimensions km source
2018 280.0 Johnston
2018 359.0 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 168703 . SwRI (Space Science Department). Retrieved March 15, 2019.
  2. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 15, 2019.
  3. ↑ a b c (168703) 2000 GP183 at the IAU Minor Planet Center (English) Retrieved March 15, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2000-O12: 1999 RZ253, 2000 GP183 . IAU . July 22, 2000. Retrieved March 15, 2019.
  6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 15, 2019.
  7. ↑ (168703) 2000 GP183 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 15, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 15, 2019.
  9. ↑ (168703) 2000 GP183 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  10. ↑ a b c Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 15, 2019.