(523693) 2014 FT 71

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Asteroid
(523693) 2014 FT 71
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 43.725  AU
eccentricity 0.142
Perihelion - aphelion 37.526 AU - 49.924 AU
Inclination of the orbit plane 27.9 °
Length of the ascending node 346.4 °
Argument of the periapsis 349.5 °
Time of passage of the perihelion January 11, 2117
Sidereal period 289 a 1.6 M.
Mean orbital velocity 4.467 km / s
Physical Properties
Medium diameter approx. 490 km
Albedo 0.07-0.09
Absolute brightness 5.0 - 5.1 mag
history
Explorer Scott S. Sheppard
Chadwick A. Trujillo
Date of discovery March 24, 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.

(523693) 2014 FT 71 is a large trans-Neptunian object in the Kuiper Belt , which is classified as a Scattered Disc Object or a Cubewano in terms of orbit dynamics . Because of its size, the asteroid is a dwarf planet candidate .

discovery

2014 FT 71 was discovered on March 24, 2014 by Scott Sheppard and Chad Trujillo with the 4.0 m telescope at the Cerro Tololo Observatory , which was achieved through the 6.5 m Magellan-Baade telescope of the Las Campanas Observatory on May 2, 2014. The discovery was announced on May 6, 2015, the planetoid was given the minor planet number 523693 on September 25, 2018 .

After its discovery, in 2014 FT 71 could be identified on photos taken as part of the Pan-STARRS program at the Haleakalā Observatory ( Maui ) up to February 26, 2010, thus extending its observation period by 4 years, including his Calculate orbit more accurately. In October 2018, a total of 95 observations were made over a period of 8 years. The last observation so far was carried out in May 2017 as part of the Pan-STARRS project. (As of February 21, 2019)

properties

Orbit

2014 FT 71 orbits the sun in 289.13 years on a slightly elliptical orbit between 37.53  AU and 49.92 AU from its center. The orbit eccentricity is 0.142, the orbit is 27.93 ° inclined to the ecliptic . The planetoid is currently 47.56 AU from the Sun. The next time it passes through perihelion in 2117, the last perihelion should have been in 1827.

Marc Buie ( DES ) classifies the planetoid as SDO , while the Minor Planet Center classifies it generally as a “Distant Object” and as a non-SDO. The Johnston's Archive, however, lists him as Cubewano , whereby he would belong to the "hot" classic KBO in terms of rail dynamics .

Size and rotation

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 2014 FT 71 is 21.82  m .

Since it can be assumed that 2014 FT 71 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 expects that it is at 2014 FT 71 to possibly is a dwarf planet.

Provisions of the diameter for 2014 FT 71
year Dimensions km source
2018 443.0 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 523693 . SwRI (Space Science Department). Retrieved February 21, 2019.
  2. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved February 21, 2019.
  3. ↑ a b c (523693) 2014 FT71 at the IAU Minor Planet Center (English) Retrieved on February 21, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2015-J11: 2014 FT71 . IAU . May 6, 2015. Accessed February 21, 2019.
  6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved February 20, 2019.
  7. ↑ (523693) 2014 FT71 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved February 21, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved February 21, 2019.
  9. ↑ (523693) 2014 FT71 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 February 21, 2019.