2014 GX ₅₃

Asteroid 2014 GX 53
Properties of the orbit ( animation ) Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type	SDO or CKBO ( «Hot» ), «Distant Object»
Major semi-axis	40.977  AU
eccentricity	0.145
Perihelion - aphelion	35.055 AU - 46.899 AU
Inclination of the orbit plane	14.5 °
Length of the ascending node	97.3 °
Argument of the periapsis	130.1 °
Time of passage of the perihelion	April 22, 2022
Sidereal period	262 a 3.7 M
Mean orbital velocity	4.615 km / s
Physical Properties
Medium diameter	approx. 373 km
Albedo	0.08-0.09
Absolute brightness	5.4 - 5.6 mag
history
Explorer	Pan-STARRS : B. Gibson T. Goggia N. Primak A. Schultz M. Willman
Date of discovery	5th April 2014
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.

2014 GX ₅₃ is a large trans-Neptunian object in the Kuiper Belt , which is classified as a Scattered Disk Object (SDO) or a Cubewano (CKBO) in terms of orbital dynamics. Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2014 GX ₅₃ was used on April 5, 2014 by a team of astronomers consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman, as part of the Pan-STARRS project with the 1.8-m –Ritchey Chretien – Telescope (PS1) discovered at Haleakalā Observatory ( Maui ). The discovery was announced on July 17, 2016.

After its discovery, GX _{53 could be identified} in photos up to April 12, 2002 taken as part of the Near Earth Asteroid Tracking Program (NEAT) at the Palomar Observatory ( California ), thus extending its observation period by 12 years in order to calculate its orbit more precisely. Since then, the planetoid has been observed through various earth-based telescopes. In September 2018, a total of 220 observations were made over a period of 17 years. The last observation so far was carried out in March 2018 at the Purple Mountain Observatory ( People's Republic of China ). (As of March 14, 2019)

properties

Orbit

2014 GX ₅₃ orbits the sun in 262.31 years on a slightly elliptical orbit between 35.05  AU and 46.90 AU from its center. The orbit eccentricity is 0.145, the orbit is inclined 14.50 ° to the ecliptic . The planetoid is currently 35.08 AU from the Sun. He will next pass perihelion in 2022, so the last perihelion should have occurred in 1760.

Marc Buie ( DES ) classifies the planetoid as SDO or Cubewano , where he to the ground dynamically "hot" classical KBO heard during the Minor Planet Center is no specific classification; the latter classifies it as a non-SDO and generally as a “distant object” .

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 the 2014 GX ₅₃ is 21.06  ^m .

Since it is conceivable that 2014 GX ₅₃ 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 2014 GX ₅₃ to perhaps is a dwarf planet.

Provisions of the diameter for 2014 GX ₅₃

year	Dimensions km	source
2018	368.0	Johnston
2018	373.0	Brown
The most precise determination is marked in bold .

See also

• List of trans-Neptunian objects
• List of dwarf planets of the solar system
• List of asteroids
• List of moons from asteroids

Web links

• How many dwarf planets are there in the outer solar system? Current list of the largest TNOs from Mike Brown
• Free the dwarf planets! Mike Brown's column on the IAU and the dwarf planets regarding their classifications (23 August 2011)

Individual evidence

1. ↑ ^{a b c} Marc W. Buie : Orbit Fit and Astrometric record for 14GX53 . SwRI (Space Science Department). Retrieved March 14, 2019.
2. ↑ ^{a b c} Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 14, 2019.
3. ↑ ^{a b c} 2014 GX53 at the IAU Minor Planet Center (English) Retrieved on March 14, 2019.
4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
5. ↑ MPC : MPEC 2016-O132: 2014 GX53 . IAU . July 17, 2016. Retrieved March 14, 2019.
6. ↑ 2014 GX53 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 14, 2019.
7. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 14, 2019.
8. ↑ 2014 GX53 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 March 14, 2019.