(523768) 2014 WQ 510

from Wikipedia, the free encyclopedia
Asteroid
(523768) 2014 WQ 510
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type Plutino ,
"Distant Object"
Major semi-axis 39.443  AU
eccentricity 0.158
Perihelion - aphelion 33,201 AU - 45,684 AU
Inclination of the orbit plane 22.9 °
Length of the ascending node 334.5 °
Argument of the periapsis 16 °
Time of passage of the perihelion October 31, 1914
Sidereal period 247 a 8.6 M
Mean orbital velocity 4.704 km / s
Physical Properties
Medium diameter approx. 358 km
Albedo 0.08-0.09
Absolute brightness 5.6 - 5.7 mag
history
Explorer Pan-STARRS
Date of discovery November 27, 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.

(523768) 2014 WQ 510 is a large trans-Neptunian object in the Kuiper Belt , which is classified as Plutino in terms of orbital dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2014 WQ 510 was discovered on November 27, 2014 by a team of astronomers in images taken on January 27, 2011 as part of the Pan-STARRS project at the Haleakalā Observatory ( Maui ). The discovery was announced on July 17, 2016 by an astronomical team consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman (Pan-STARRS), the planetoid received on September 25, 2018 from the IAU the minor planet number 523749 .

After its discovery, WQ 510 could be identified in photos up to May 31, 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. So far, the planetoid has only been observed through the Pan-STARRS telescope. In October 2018, a total of 128 observations were made over a period of 8 years. The last observation so far was also carried out in March 2018 on the Pan-STARRS telescope (PS1). (As of March 18, 2019)

properties

Orbit

2014 WQ 510 orbits the sun in 247.72 years on a slightly elliptical orbit between 33.20  AU and 45.68 AU from its center. The orbit eccentricity is 0.158, the orbit is inclined 22.90 ° with respect to the ecliptic . Currently, the planetoid is 45.12 AU from the sun. He passed through perihelion for the last time in 1914, so the next perihelion should take place in 2162.

Marc Buie ( DES ) classifies the planetoid as Plutino ( 2: 3 resonance with Neptune ), while the Minor Planet Center does not have a specific classification; the latter lists it as a non-SDO and generally 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 magnitude of 2014 WQ 510 is 22.23  m .

Since it is conceivable that 2014 WQ 510 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 believes that it is in 2014 WQ 510 to perhaps is a dwarf planet.

Provisions of the diameter for 2014 WQ 510
year Dimensions km source
2018 336.0 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 523768 . SwRI (Space Science Department). Retrieved March 18, 2019.
  2. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 18, 2019.
  3. ↑ a b c (523768) 2014 WQ510 at the IAU Minor Planet Center (English) Retrieved March 18, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2016-O248: 2014 WQ510 . IAU . July 17, 2016. Accessed March 18, 2019.
  6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 18, 2019. Reference there: MPC 111779
  7. ↑ (523768) 2014 WQ510 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 18, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 18, 2019.
  9. ↑ (523768) 2014 WQ510 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 March 18, 2019.