(523769) 2014 WS 510

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Asteroid
(523769) 2014 WS 510
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type RKBO 2: 5 or
SDO ,
"Distant Object"
Major semi-axis 54.941  AU
eccentricity 0.371
Perihelion - aphelion 34.565 AU - 75.316 AU
Inclination of the orbit plane 8.9 °
Length of the ascending node 161.9 °
Argument of the periapsis 269.3 °
Time of passage of the perihelion August 27, 1983
Sidereal period 407 a 2.9 M.
Mean orbital velocity 3.985 km / s
Physical Properties
Medium diameter approx. 373 km
Albedo 0.08-0.09
Absolute brightness 5.6 likes
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery December 7, 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.

(523769) 2014 WS 510 is a large trans-Neptunian object that is classified as a resonant Kuiper belt object (2: 5 resonance) or as a scattered disk object (SDO). Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2014 WS 510 was examined on December 7, 2014 by an astronomical team , consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman, on images of the 1.8 m Pan-STARRS telescope ( PS1) made on May 6, 2010, discovered at Haleakalā Observatory ( Maui ). The discovery was announced on July 17, 2016 the asteroid was given on 25 September by the IAU , the Minor Planet -number five hundred twenty-three thousand seven hundred sixty-nine .

After its discovery, WS 510 could be identified on photos up to January 8, 2002, taken as part of the Near Earth Asteroid Tracking Program (NEAT) at the Palomar Observatory , and so its observation period was extended by 12 years calculate its orbit more precisely. Since then, the planetoid has been observed through various earth-based telescopes. In October 2018, a total of 179 observations over a period of 17 years were available. The last observation so far was again carried out in March 2018 at the Pan-STARRS telescope (PS1). (As of March 13, 2019)

properties

Orbit

2014 WS 510 orbits the sun in 407.24 years in an elliptical orbit between 34.56  AU and 75.32 AU from its center. The orbit eccentricity is 0.370, the orbit is 8.91 ° inclined to the ecliptic . Currently, the planetoid is 41.02 AU from the sun. The last time he went through perihelion was in 1983, the next perihelion should therefore take place in 2390.

Marc Buie ( DES ) classifies the planetoid as RKBO ( 2: 5 resonance with Neptune ), while the Minor Planet Center classifies it as SDO ; the latter also generally lists it as a “distant object” .

size

A diameter of 373 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.6  m . Based on this diameter, the total surface area is around 437,000 km 2 . The apparent brightness of 2014 WZ 509 is 21.80  m .

Since it is conceivable that 2014 WS 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 WS 510 to perhaps is a dwarf planet.

Provisions of the diameter for 2014 WS 510
year Dimensions km source
2018 336.0 Johnston
2018 373.0 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 523769 . SwRI (Space Science Department). Retrieved March 13, 2019.
  2. ^ A b Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 13, 2019.
  3. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 13, 2019.
  4. ↑ a b c (523769) 2014 WS510 at the IAU Minor Planet Center (English) Retrieved on March 13, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPEC 2016-O250: 2014 WS510 . IAU . July 17, 2016. Retrieved March 13, 2019.
  7. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 13, 2019.
  8. ↑ (523769) 2014 WS510 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 13, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  9. ↑ (523769) 2014 WS510 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 13, 2019.