2014 GT ₅₃

Asteroid 2014 GT 53
Properties of the orbit ( animation ) Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type	CKBO ( "Hot" ) "Distant Object"
Major semi-axis	46.58  AU
eccentricity	0.103
Perihelion - aphelion	41.784 AU - 51.376 AU
Inclination of the orbit plane	12.1 °
Length of the ascending node	33.8 °
Argument of the periapsis	280.5 °
Time of passage of the perihelion	October 22, 2082
Sidereal period	317 a 10.9 M
Mean orbital velocity	4.328 km / s
Physical Properties
Medium diameter	approx. 343 km
Albedo	0.08-0.09
Absolute brightness	5.7 likes
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 GT ₅₃ 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

2014 GT ₅₃ was used on April 5, 2014 by an astronomical team 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 16, 2016.

After its discovery, in 2014 GT _{53 could be identified} on photos taken at the Cerro Tololo Observatory ( Chile ) going back to January 14, 2002, thus extending its observation period by twelve years in order to calculate its orbit more precisely. Since then, the planetoid has been observed by the Pan-STARRS and the Cerro Tololo telescope. In September 2018, there were a total of 174 observations over a period of 16 years. The last observation so far was carried out in May 2018 at the Pan-STARRS telescope (PS1). (As of March 22, 2019)

properties

Orbit

2014 GT ₅₃ orbits the sun in 317.91 years on a slightly elliptical orbit between 41.78  AU and 51.38 AU from its center. The orbital eccentricity is 0.103, the orbit is 12.12 ° inclined to the ecliptic . The planetoid is currently 45.57 AU from the sun. He will next pass perihelion in 2082, so the last perihelion should have occurred in 1764.

Marc Buie ( DES ) classifies the asteroid as Cubewano , whereby it belongs to the orbital dynamics “hot” 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 343 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.7  ^m . Based on this diameter, the total surface area is around 370,000 km ² . The apparent brightness of the 2014 GT ₅₃ is 22.34  ^m .

Since it is conceivable that 2014 GT 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 expects that it is at 2,014 GT ₅₃ to perhaps is a dwarf planet.

Provisions of the diameter for 2014 GT ₅₃

year	Dimensions km	source
2018	368.0	Johnston
2018	343.0	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} Marc W. Buie : Orbit Fit and Astrometric record for 14GT53 . SwRI (Space Science Department). Retrieved March 22, 2019.
2. ↑ ^{a b c} Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 22, 2019.
3. ↑ ^{a b c} 2014 GT53 at the IAU Minor Planet Center (English) Retrieved on March 22, 2019.
4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
5. ↑ MPC : MPEC 2016-045: 2014 GT53 . IAU . July 16, 2016. Accessed March 22, 2019.
6. ↑ 2014 GT53 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 22, 2019.
7. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 22, 2019.
8. ↑ 2014 GT53 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 22, 2019.