(523777) 2014 YF ₅₀

Asteroid (523777) 2014 YF 50
Properties of the orbit ( animation ) Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type	SDO , "Distant Object"
Major semi-axis	79.759  AU
eccentricity	0.552
Perihelion - aphelion	35,709 AU - 123,809 AU
Inclination of the orbit plane	18.2 °
Length of the ascending node	73 °
Argument of the periapsis	87.2 °
Time of passage of the perihelion	January 4, 2022
Sidereal period	712 a 4.0 M
Mean orbital velocity	3.308 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	December 29, 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.

(523777) 2014 YF ₅₀ is a large trans-Neptunian object that 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

2014 YF ₅₀ was discovered on December 29, 2014 by a team of astronomers consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman, on images of the 1.8 m Pan-STARRS telescope ( PS1) made on November 21, 2010, discovered at Haleakalā Observatory ( Maui ). The discovery was announced on July 17, 2016 the asteroid was on 25 September 2018 the IAU , the Minor Planet -number 523 777 .

After its discovery in 2014, YF _{50 could be identified} in photos up to November 21, 2010, which were also taken as part of the Pan-STARRS program, and thus its observation period was extended by four years in order to calculate its orbit more precisely. So far, the planetoid has only been observed through the Pan-STARRS telescope. In October 2018, a total of 193 observations were made over a period of 8 years. The last observation to date was also carried out on the Pan-STARRS telescope (PS1) in May 2018 . (As of March 13, 2019)

properties

Orbit

2014 YF ₅₀ orbits the sun in 712.33 years in a strongly elliptical orbit between 35.71  AU and 123.81 AU from its center. The orbital eccentricity is 0.552, the orbit is 18.20 ° inclined to the ecliptic . The planetoid is currently 35.77 AU from the sun. He will next pass through perihelion in 2022, so the last perihelion should have occurred in 1309.

Both Marc Buie ( DES ) and the Minor Planet Center classify the planetoid as SDO ; the latter also generally lists it 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 2014 YF ₅₀ is 21.04  ^m .

Since it is conceivable that 2014 YF ₅₀ will be 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 believes that it is in 2014 YF ₅₀ to perhaps is a dwarf planet.

Provisions of the diameter for 2014 YF ₅₀

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} Marc W. Buie : Orbit Fit and Astrometric record for 523777 . SwRI (Space Science Department). Retrieved March 13, 2019.
2. ↑ ^{a b} MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 13, 2019.
3. ↑ ^{a b c} (523777) 2014 YF50 at the IAU Minor Planet Center (English) Retrieved March 13, 2019.
4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
5. ↑ MPC : MPEC 2016-O253: 2014 YF50 . IAU . July 17, 2016. Retrieved March 13, 2019.
6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 13, 2019.
7. ↑ (523777) 2014 YF50 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 13, 2019.
8. ^ ^{A b} Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 13, 2019.
9. ↑ (523777) 2014 YF50 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
10. ↑ ^{a b} Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 13, 2019.