2010 VR 11
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Asteroid 2010 VR 11 |
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|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type | DO (E SDO ) or CKBO ( «Hot» ), «Distant Object» |
| Major semi-axis | 41.231 AU |
| eccentricity | 0.141 |
| Perihelion - aphelion | 35.418 AU - 47.043 AU |
| Inclination of the orbit plane | 31 ° |
| Length of the ascending node | 86.7 ° |
| Argument of the periapsis | 36.2 ° |
| Time of passage of the perihelion | April 8, 2045 |
| Sidereal period | 264 a 9.0 M |
| Mean orbital velocity | 4.601 km / s |
| Physical Properties | |
| Medium diameter | approx. 315 km |
| Albedo | 0.08-0.09 |
| Absolute brightness | 5.7 - 5.9 mag |
| history | |
| Explorer | David L. Rabinowitz , Megan E. Schwamb, Suzanne W. Tourtellotte |
| Date of discovery | November 2, 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 VR 11 is a large trans-Neptunian object in the Kuiper belt , which is classified as an extended Scattered Disk Object (DO) or as a Cubewano (CKBO) in terms of railway dynamics. Due to its size, the asteroid is one of the dwarf planet candidates .
discovery
2010 VR 11 was discovered on November 2, 2010 by an astronomical team consisting of Dave Rabinowitz , Meg Schwamb and Suzanne Tourtellotte with the 3.6 m ESO telescope at the La Silla Observatory ( Chile ) of the European Southern Observatory (ESO) discovered.
After its discovery, VR 11 could be identified in photos taken as part of the Sloan Digital Sky Survey program (SDSS) at the Apache Point Observatory ( New Mexico ) going back to October 1, 2000, thus changing its observation period Extend ten years to calculate its orbit more accurately. Since then, the planetoid has been observed through various earth-based telescopes. In September 2018 there were a total of 193 observations over a period of 18 years. The last observation so far was carried out in January 2018 at the Pan-STARRS telescope (PS1) ( Maui ). (As of March 27, 2019)
properties
Orbit
2010 VR 11 orbits the sun in 264.75 years on a slightly elliptical orbit between 35.41 AU and 47.04 AU from its center. The orbit eccentricity is 0.141, the orbit is 31.00 ° inclined to the ecliptic . The planetoid is currently 36.81 AU from the sun. He will next pass through perihelion in 2045, so the last perihelion should have occurred in 1780.
Marc Buie ( DES ) classifies the planetoid as an extended SDO (ESDO or DO ), while the Minor Planet Center does not have a specific classification; the latter classifies it as a non-SDO and generally as a “distant object” . The Johnston's Archive, however, lists him as Cubewano , whereby he would belong to the "hot" classic KBO in terms of rail dynamics .
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 area is about 312,000 km². The apparent brightness of 2010 VR 11 is 21.54 m .
Since it is conceivable that 2010 VR 11 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 expects that it is at 2010 VR 11 to perhaps is a dwarf planet.
| year | Dimensions km | source |
|---|---|---|
| 2018 | 321.0 | 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 10VR11 . SwRI (Space Science Department). 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 2010 VR11 at the IAU Minor Planet Center (English) Retrieved on March 27, 2019.
- ↑ v ≈ π * a / period (1 + sqrt (1-e²))
- ↑ 2010 VR11 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 27, 2019.
- ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 27, 2019.
- ↑ 2010 VR11 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.