2010 FX 86
|
Asteroid 2010 FX 86 |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | DO or "Distant Object" |
| Major semi-axis | 47.135 AU |
| eccentricity | 0.064 |
| Perihelion - aphelion | 44.109 AU - 50.161 AU |
| Inclination of the orbit plane | 25.2 ° |
| Length of the ascending node | 311.1 ° |
| Argument of the periapsis | 347.9 ° |
| Time of passage of the perihelion | August 30, 2077 |
| Sidereal period | 323 a 7.3 M |
| Physical Properties | |
| Medium diameter | approx. 549 km |
| Albedo | 0.09 |
| Rotation period | 15.80 h (0.658 d ) |
| Absolute brightness | 4.6 - 4.7 mag |
| history | |
| Explorer |
Scott S. Sheppard Andrzej Udalski Igor Soszyński Chadwick A. Trujillo |
| Date of discovery | March 17, 2010 |
| 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. | |
2010 FX 86 is a large trans-Neptunian object , which is classified as a detached object or, more generally, as a "distant object" . Because of its size, the asteroid is a dwarf planet candidate .
discovery
2010 FX 86 was discovered on March 17, 2010 by an American-Polish team of astronomers consisting of Scott S. Sheppard , Andrzej Udalski , Igor Soszyński and Chad Trujillo with the 1.3 telescope at the Las Campanas Observatory ( Chile ). The discovery was announced on April 9, 2010.
The asteroid's observation sheet begins with the official discovery observation in March 2010. In September 2018, a total of 148 observations were made over a period of 8 years. The last observation so far was carried out in June 2017 as part of the Pan-STARRS program.
properties
Orbit
2010 FX 86 orbits the sun in 323.61 years on a slightly elliptical orbit between 44.11 AU and 50.16 AU from its center. The eccentricity of the orbit is 0.064, the orbit is inclined 25.17 ° to the ecliptic . The planetoid is currently 46.03 AU from the Sun and 46.10 AU from Earth . He will next pass through perihelion in 2077, so the last perihelion should have occurred in 1754. (As of February 3, 2019)
On the basis of the orbital elements, one calculated first with a Cubewano ; Marc Buie ( DES ), on the other hand, classifies the asteroid as an extended SDO (ESDO or DO ); the Minor Planet Center generally lists it as a “Distant Object” .
size
Currently, a diameter of about 549 km is assumed, based on a reflectivity of 9% and an absolute brightness of 4.6 m ; this is, however, fraught with some uncertainties, since the estimates range from 230 to 600 km due to the still unknown albedo. The apparent brightness of 2010 FX 86 is 21.32 m .
Since it can be assumed that 2010 FX 86 is in hydrostatic equilibrium due to its size and therefore has to be largely round, it should meet the criteria for classification as a dwarf planet . Mike Brown believes that 2010 FX 86 is likely a dwarf planet.
2010 FX 86 rotates once around its axis every 15 hours and 48 minutes. It follows that in a 2010 FX 86 year it performs 179 633.6 self- rotations (“days”).
| year | Dimensions km | source |
|---|---|---|
| 2018 | 509.0 | Johnston |
| 2018 | 549.0 | Brown |
| The most precise determination is marked in bold . | ||
See also
- List of asteroids
- List of trans-Neptunian objects
- List of dwarf planets of the solar system
- 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 10FX86 . SwRI (Space Science Department). Retrieved February 3, 2019.
- ↑ a b c 2010 FX86 at the IAU Minor Planet Center (English)
- ↑ MPC : MPEC 2010-G57: 2010 FX86 . IAU . April 9, 2010. Retrieved February 3, 2019.
- ↑ MPC : MPEC 2011-F17: 2010 FX86 . IAU . April 9, 2010. Retrieved February 3, 2019.
- ↑ 2010 FX86 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved February 3, 2019.
- ↑ MPC : MPEC 2010-K70: Distant Minor Planets (2010 June 13.0 TT) . IAU . May 29, 2010. Retrieved February 3, 2019.
- ↑ 2010 FX86 in the database of "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 February 3, 2019.
- ^ Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved February 3, 2019.