2014 FY 72

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Asteroid
2014 FJ 72
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO ,
"Distant Object"
Major semi-axis 94.264  AU
eccentricity 0.591
Perihelion - aphelion 38.53 AU - 149.997 AU
Inclination of the orbit plane 15.4 °
Length of the ascending node 302.9 °
Argument of the periapsis 132.7 °
Time of passage of the perihelion December 28, 1929
Sidereal period 915 a 2.6 M.
Mean orbital velocity 3.043 km / s
Physical Properties
Medium diameter approx. 315 km
Albedo 0.08-0.09
Absolute brightness 5.6 - 5.9 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.

2014 FJ 72 is a large trans-Neptunian object that is classified as a Scattered Disk Object (SDO) in terms of its orbit dynamics . Due to its size, the asteroid is one of the dwarf planet candidates .

discovery

2014 FJ 72 was discovered on March 24, 2014 by Scott Sheppard and Chad Trujillo with the 4.0 m Víctor M. Blanco telescope ( DE Cam) at the Cerro Tololo Observatory ( Chile ). The discovery was announced on August 31, 2016.

The observation arc of the asteroid begins with the official observation on March 24, 2014. Since then, the asteroid has been observed by various earth-based telescopes. In April 2017, there were only 13 observations over a period of 2 years. The last observation so far was carried out in December 2015 at the Las Campanas Observatory (Chile). (As of March 27, 2019)

properties

Orbit

2014 FJ 72 orbits the sun in 915.22 years in a strongly elliptical orbit between 38.53  AU and 150.00 AU from its center. The orbit eccentricity is 0.591, the orbit is 15.41 ° inclined to the ecliptic . The planetoid is currently 71.65 AU from the sun. He passed through perihelion for the last time in 1929, so the next perihelion should take place in 2845.

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 315 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.9  m . Based on this diameter, the total surface area is around 312,000 km 2 . The apparent magnitude of 2014 FJ 72 is 24.24  m .

Since it is conceivable that 2014 FJ 72 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 FJ 72 to perhaps is a dwarf planet.

Provisions of the diameter for 2014 FJ 72
year Dimensions km source
2018 336.0 Johnston
2018 315.0 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 14FJ72 . SwRI (Space Science Department). Retrieved March 27, 2019.
  2. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 27, 2019.
  3. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 27, 2019.
  4. ↑ a b c 2014 FJ72 at the IAU Minor Planet Center (English). Accessed March 27, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPEC 2016-Q71: 2014 FJ72 . IAU . August 31, 2016. Accessed March 27, 2019.
  7. ↑ 2014 FJ72 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 27, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ 2014 FJ72 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 27, 2019.