(523646) 2010 VL 201

from Wikipedia, the free encyclopedia
Asteroid
(523646) 2010 VL 201
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type RKBO 3: 4 ,
"Distant Object"
Major semi-axis 36.285  AU
eccentricity 0.041
Perihelion - aphelion 34.785 AU - 37.784 AU
Inclination of the orbit plane 5.5 °
Length of the ascending node 104 °
Argument of the periapsis 346.4 °
Time of passage of the perihelion December 27, 2035
Sidereal period 218 a 6.8 M
Mean orbital velocity 4.904 km / s
Physical Properties
Medium diameter approx. 302 km
Albedo 0.08-0.09
Absolute brightness 5.9 - 6.0 mag
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery October 29, 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.

(523646) 2010 VL 201 is a large trans-Neptunian object in the Kuiper belt , which is classified as a resonant Kuiper belt object (3: 4 resonance) in terms of orbital dynamics . Due to its size, the asteroid is one of the dwarf planet candidates .

discovery

2010 VL 201 was tested on October 29, 2010 by a team of astronomers consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman, as part of the Pan-STARRS project with the 1.8 m -Ritchey Chretien Telescope (PS1) discovered at Haleakalā Observatory ( Maui ). The discovery was announced on July 15, 2016 the asteroid was on 25 September 2018 the IAU , the Minor Planet -number five hundred twenty-three thousand six hundred and forty-six .

The observation arc of the planetoid begins with the official observation on October 29, 2010. Since then, the planetoid has been observed through various earth-based telescopes. In October 2018, a total of 210 observations were made over a period of 8 years. The last observation so far was carried out again at the Pan-STARRS telescope in January 2018. (As of April 3, 2019)

properties

Orbit

2010 VL 201 orbits the sun in 218.57 years in an almost circular orbit between 34.78  AU and 37.78 AU from its center. The orbital eccentricity is 0.041, the orbit is 5.53 ° inclined to the ecliptic . The planetoid is currently 34.96 AU from the Sun. He will next pass perihelion in 2035, so the last perihelion should have occurred in 1817.

Marc Buie ( DES ) classifies the planetoid as RKBO ( 3: 4 resonance with Neptune ), 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” .

size

A diameter of 302 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 6.0  m . Based on this diameter, the total surface area is around 287,000 km 2 . The apparent magnitude of 2010 VL 201 is 21.62  m .

Since it is conceivable that 2010 VL 201 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 VL 201 to perhaps is a dwarf planet.

Determination of the diameter for 2010 VL 201
year Dimensions km source
2018 293.0 Johnston
2018 302.0 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 523646 . SwRI (Space Science Department). Retrieved April 3, 2019.
  2. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved April 3, 2019.
  3. ↑ a b c (523646) 2010 VL201 at the IAU Minor Planet Center (English) Retrieved on April 3, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2016-N119: 2010 VL201 . IAU . July 15, 2016. Retrieved April 3, 2019.
  6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved April 3, 2019. Reference there: MPC 111778
  7. ↑ (523646) 2010 VL201 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved April 3, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved April 3, 2019.
  9. ↑ (523646) 2010 VL201 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
  10. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved April 3, 2019.