2010 RF 43
|
Asteroid 2010 RF 43 |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | SDO |
| Major semi-axis | 49.567 AU |
| eccentricity | 0.247 |
| Perihelion - aphelion | 37.313 AU - 61.82 AU |
| Inclination of the orbit plane | 30.7 ° |
| Length of the ascending node | 25.2 ° |
| Argument of the periapsis | 193 ° |
| Time of passage of the perihelion | May 22, 1925 |
| Sidereal period | 348 a 11.6 M |
| Physical Properties | |
| Medium diameter | 615 km |
| Albedo | 0.09-0.11 |
| Absolute brightness | 3.7 - 4.2 mag |
| history | |
| Explorer |
David L. Rabinowitz Megan E. Schwamb Suzanne W. Tourtellotte |
| Date of discovery | September 9, 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 RF 43 is a large trans-Neptunian object that is classified as SDO or generally just “TNO”. Due to its size, the asteroid is one of the dwarf planet candidates .
discovery
2010 RF 43 was on 9 September 2010 by David L. Rabinowitz , Megan Schwamb and Suzanne Tourtellotte within the Deep Ecliptic Survey -Programmes at La Silla Observatory of ESO in Chile discovered. Its discovery was announced on October 17, 2011.
The first image was taken three days earlier on September 6, 2010. Since then, RF 43 has been observed with earth-based telescopes in 2010 . In September 2018, a total of 142 observations were made over a period of 8 years.
properties
Orbit
2010 RF 43 orbits the sun in 348.97 years in a strongly elliptical orbit between 37.31 AU and 61.82 AU from its center. The orbital eccentricity is 0.247, the orbit is inclined 30.68 ° with respect to the ecliptic . The asteroid is currently close to its aphelion, about 80 AU away. The last perihelion took place around 1925; the next would have to occur in 2274.
The asteroid has not yet been clearly assigned by the MPC , but due to its relatively high eccentricity and orbit inclination, it should belong to the SDO, as which it is also classified by Marc Buie ( DES ). At 37 AU, its perihelion is too deep to be considered a detached object (DO), which typically does not fall below 40 AU and never comes close to the orbit of Neptune .
size
It is currently assumed to have an estimated diameter of 615 km; this value is based on an assumed reflectivity of 10% and an absolute brightness of 4.2 m . It can therefore be assumed that 2010 RF 43 is in hydrostatic equilibrium and the asteroid is thus a dwarf planet candidate , based on Mike Brown's taxonomic 5-class system , from which this assessment comes. Brown assumes that 2010 RF 43 is most likely a dwarf planet. Calculations of the light curve resulted in a calculated value of 636.06 km with an albedo of 10% and an absolute brightness of 4.1 m .
| year | Dimensions km | source |
|---|---|---|
| 2013? | 636.06 | LightCurve DataBase |
| 2018 | 735.0 | Johnston |
| 2018 | 615.0 | 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
Individual evidence
- ↑ MPC : 2010 RF43 (October 2017)
- ↑ MPC : MPEC 2011-U09: 2010 RF43 (October 2011)
- ↑ M. Buie : Orbit Fit and Astrometric record for 10RF43 (November 2018)
- ↑ MinorPlanetInfo: LCDB Data for 2010 RF43 (2013?)
- ^ Johnston's Archives: List of Known Trans-Neptunian Objects
- ↑ M. Brown : How many dwarf planets are there in the outer solar system? (November 2018)