2014 FY 72
Asteroid 2014 FJ 72 |
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Properties of the orbit ( animation ) | |
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.
year | Dimensions km | source |
---|---|---|
2018 | 336.0 | Johnston |
2018 | 315.0 | 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
- ^ A b Marc W. Buie : Orbit Fit and Astrometric record for 14FJ72 . SwRI (Space Science Department). Retrieved March 27, 2019.
- ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 27, 2019.
- ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 27, 2019.
- ↑ a b c 2014 FJ72 at the IAU Minor Planet Center (English). Accessed March 27, 2019.
- ↑ v ≈ π * a / period (1 + sqrt (1-e²))
- ↑ MPC : MPEC 2016-Q71: 2014 FJ72 . IAU . August 31, 2016. Accessed March 27, 2019.
- ↑ 2014 FJ72 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 27, 2019.
- ↑ 2014 FJ72 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 27, 2019.