(523752) 2014 VU 37

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Asteroid
(523752) 2014 VU 37
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type DO (E SDO ) or
CKBO ( «Hot» ),
«Distant Object»
Major semi-axis 40.555  AU
eccentricity 0.048
Perihelion - aphelion 38,593 AU - 42,517 AU
Inclination of the orbit plane 28.7 °
Length of the ascending node 248.2 °
Argument of the periapsis 341 °
Time of passage of the perihelion March 18, 2132
Sidereal period 258 a 3.2 M.
Mean orbital velocity 4.639 km / s
Physical Properties
Medium diameter approx. 479 km
Albedo 0.07-0.09
Absolute brightness 5.1 - 5.2 mag
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery November 12, 2014
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.

(523752) 2014 VU 37 is a large trans-Neptunian object in the Kuiper Belt , which is classified as an extended Scattered Disk Object or as a Cubewano in terms of orbital dynamics . Because of its size, the asteroid is a dwarf planet candidate .

discovery

2014 VU 37 was tested on November 12, 2014 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 16, 2016, the planetoid was given the minor planet number 523752 on September 25, 2018 .

After its discovery in 2014, VU 37 could be identified on photos up to October 10, 2010, which were also taken as part of the Pan-STARRS program, and thus its observation period was extended by four years in order to calculate its orbit more precisely. In October 2018, a total of 144 observations were made over a period of 8 years. The last observation so far was made in December 2018 at the Purple Mountain Observatory . (As of February 25, 2019)

properties

Orbit

2014 VU 37 orbits the sun in 258.27 years on a slightly elliptical orbit between 38.59  AU and 42.52 AU from its center. The orbital eccentricity is 0.048, the orbit is 28.68 ° inclined to the ecliptic . The planetoid is currently 42.38 AU from the sun. The next time it passes through perihelion in 2132, the last perihelion is likely to have taken place in 1873.

Marc Buie ( DES ) classifies the planetoid as an extended SDO (ESDO or DO ), while the Minor Planet Center classifies it as a non-SDO and generally as a “distant object” . The Johnston's Archive runs it against it as Cubewano , where it to the ground dynamically "hot" classical KBO would belong.

Size and rotation

A diameter of around 479 km is currently assumed, based on a reflectivity of 7% and an absolute brightness of 5.2  m . The apparent brightness of 2014 VU 37 is 21.54  m .

Since it can be assumed that in 2014 VU 37 is in hydrostatic equilibrium due to its size and must therefore be largely round, it should meet the criteria for classification as a dwarf planet . Mike Brown believes that it is in 2014 VU 37 to possibly is a dwarf planet.

Provisions of the diameter for 2014 VU 37
year Dimensions km source
2018 423.0 Johnston
2018 479.0 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 523752 . SwRI (Space Science Department). Retrieved February 25, 2019.
  2. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved February 25, 2019.
  3. ↑ a b c (523752) 2014 VU37 at the IAU Minor Planet Center (English) Retrieved on February 25, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2016-023: 2014 VU37 . IAU . July 16, 2016. Retrieved February 25, 2019.
  6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved on February 25, 2019, reference there: MPC 105261
  7. ↑ (523752) 2014 VU37 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved February 25, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved February 25, 2019.
  9. ↑ (523752) 2014 VU37 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 February 25, 2019.