(470443) 2007 XV 50
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Asteroid (470443) 2007 XV 50 |
|
|---|---|
| Properties of the orbit ( animation ) | |
| Orbit type |
SDO or "Distant Object" |
| Major semi-axis | 45.723 AU |
| eccentricity | 0.069 |
| Perihelion - aphelion | 42.565 AU - 48.882 AU |
| Inclination of the orbit plane | 22.9 ° |
| Length of the ascending node | 53.6 ° |
| Argument of the periapsis | 270 ° |
| Time of passage of the perihelion | November 27, 1926 |
| Sidereal period | 309 a 2.2 M. |
| Physical Properties | |
| Medium diameter | approx. 524 km |
| Albedo | 0.08-0.09 |
| Absolute brightness | 4.4 likes |
| history | |
| Explorer | Palomar observatory |
| Date of discovery | December 13, 2007 |
| 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. | |
(470443) 2007 XV 50 is a large trans-Neptunian object , which is classified as Cubewano in terms of orbital dynamics . Because of its size, the asteroid is a dwarf planet candidate .
discovery
2007 XV 50 was on 13 December 2007 at the Palomar Observatory ( California discovered). The discovery was announced on February 12, 2008. The IAU gave the planetoid the minor planet number 470443 .
The asteroid's observation arc begins with the official discovery observation in December 2007. In April 2017, a total of 93 observations over a period of 9 years were available.
properties
Orbit
2007 XV 50 orbits the sun in 309.18 years in a strongly elliptical orbit between 42.56 AU and 48.88 AU from its center. The orbital eccentricity is 0.069, the orbit is inclined 22.93 ° with respect to the ecliptic . The planetoid is currently 46.85 AU from the sun or 46.31 from the earth (as of February 1, 2019). He passed through perihelion for the last time in 1926, so the next perihelion should take place around the year 2236.
Marc Buie ( DES ) classifies it as an SDO . The MPC initially classified the XV 50 as a Cubewano in 2007 , while it is now listed as a "Distant Object" .
size
A diameter of around 500 to 600 km is currently assumed, based on a reflectivity of 9 to 10% and an absolute brightness of 4.4 m ; however, this is fraught with some uncertainties.
Since it can be assumed that 2007 XV 50 is in hydrostatic equilibrium due to its size and must therefore be largely round, it should nevertheless meet the criteria for classification as a dwarf planet . Mike Brown believes that 2007 XV 50 is likely a dwarf planet.
| year | Dimensions km | source |
|---|---|---|
| 2018 | 584.0 | Johnston |
| 2018 | 524.0 | 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
- 2007 XV 50 in the List Of Transneptunian Objects of the Minor Planet Center
- 2007 XV 50 in listing (Johnston's Archives)
- 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 470443 . SwRI (Space Science Department). Accessed January 30, 2019.
- ↑ a b c (470443) 2007 XV50 at the IAU Minor Planet Center (English)
- ↑ MPC : MPEC 2008-C75: 2007 XV50 . IAU . February 12, 2008. Retrieved February 1, 2019.
- ↑ (470443) 2007 XV50 in the Small-Body Database of the Jet Propulsion Laboratory (English). Accessed January 30, 2019.
- ↑ Brian G. Marsden: MPEC 2009-R09: Distant Minor Planets (2009 SEPT 16.0 TT.) . In: IAU Minor Planet Center . September 16, 2009. Retrieved January 29, 2019.
- ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech. November 12, 2018. Retrieved January 29, 2019.
- ^ Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved January 30, 2019.