(471210) 2010 VW 11

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Asteroid
(471210) 2010 VW 11
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO ,
"Distant Object"
Major semi-axis 50.288  AU
eccentricity 0.273
Perihelion - aphelion 36.556 AU - 64.02 AU
Inclination of the orbit plane 27.8 °
Length of the ascending node 158 °
Argument of the periapsis 259.3 °
Time of passage of the perihelion 17th April 2015
Sidereal period 356 a 7.4 M
Mean orbital velocity 4.166 km / s
Physical Properties
Medium diameter approx. 358 km
Albedo 0.08-0.09
Absolute brightness 5.3 - 5.7 mag
history
Explorer David L. Rabinowitz
Megan E. Schwamb
Suzanne W. Tourtellotte
Date of discovery November 3, 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.

(471210) 2010 VW 11 is a large trans-Neptunian object in the Kuiper belt that is classified as a Scattered Disk Object (SDO) in terms of rail dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2010 VW 11 was discovered on November 3, 2010 by a team of astronomers 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. The planetoid was later given the minor planet number 471210 by the IAU .

After its discovery, VW 11 could be identified in photos up to October 6, 2002, which were taken as part of the Near Earth Asteroid Tracking Program (NEAT) at the Palomar Observatory ( California ), and so its observation period was extended by 8 years in order to calculate its orbit more precisely. Since then, the planetoid has been observed through various earth-based telescopes. In April 2017 there were a total of 76 observations over a period of 6 years. The previously last observation was in July 2015 at the Lowell Observatory ( Arizona performed). (As of March 17, 2019)

properties

Orbit

2010 VW 11 orbits the sun in 356.62 years in an elliptical orbit between 36.55  AU and 64.02 AU from its center. The orbital eccentricity is 0.273, the orbit is 27.81 ° inclined to the ecliptic . Currently, the planetoid is 36.61 AU from the sun. The last time he passed through perihelion in 2015, the next perihelion is likely to take place in 2371.

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 358 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.7  m . Based on this diameter, the total surface area is around 403,000 km 2 . The apparent brightness of 2010 VW 11 is 21.21  m .

Since it is conceivable that 2010 VW 11 is in hydrostatic equilibrium due to its size and could thus be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown expects that it is at 2010 VW 11 to perhaps is a dwarf planet.

Provisions of the diameter for 2010 VW 11
year Dimensions km source
2018 386.0 Johnston
2018 358.0 Brown
The most precise determination is marked in bold .

See also

Web links

Individual evidence

  1. ^ A b Marc W. Buie : Orbit Fit and Astrometric record for 471210 . SwRI (Space Science Department). Retrieved March 17, 2019.
  2. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 17, 2019.
  3. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 17, 2019.
  4. ↑ a b c (471210) 2010 VW11 at the IAU Minor Planet Center (English) Retrieved on March 17, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 17, 2019.
  7. ↑ (471210) 2010 VW11 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 17, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ (471210) 2010 VW11 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  9. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 17, 2019.