(533563) 2014 JW 80

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Asteroid
2014 JW 80
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO ,
"Distant Object"
Major semi-axis 141.83  AU
eccentricity 0.731
Perihelion - aphelion 38.205 AU - 245.455 AU
Inclination of the orbit plane 40.7 °
Length of the ascending node 60.8 °
Argument of the periapsis 131.7 °
Time of passage of the perihelion September 25, 1989
Sidereal period 1689 a 1.4 M.
Mean orbital velocity 2.481 km / s
Physical Properties
Medium diameter approx. 329 km
Albedo 0.08-0.09
Absolute brightness 5.8 likes
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery May 8, 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.

2014 JW 80 is a large trans-Neptunian object that is classified as a Scattered Disk Object (SDO) in terms of its orbit dynamics . Due to its size, the asteroid is one of the dwarf planet candidates .

discovery

2014 JW 80 was discovered on May 8, 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 17, 2016.

After its discovery, in 2014 JW 80 could be identified on photos, which were also taken as part of the Pan-STARRS program, going back to April 20, 2010 and thus extended its observation period 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 December 2018, a total of 118 observations were made over a period of 9 years. The last observation so far was carried out again on the Pan-STARRS telescope in May 2018. (As of March 25, 2019)

properties

Orbit

2014 JW 80 orbits the sun in 1689.12 years on a highly elliptical orbit between 38.20  AU and 245.45 AU from its center. The orbital eccentricity is 0.731, the orbit is 40.71 ° inclined to the ecliptic . Currently, the planetoid is 45.69 AU from the sun. He last passed through perihelion in 1989, so the next perihelion should take place in 3678.

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 329 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.8  m . Based on this diameter, the total surface area is around 340,000 km 2 . The apparent magnitude of 2014 JM 80 is 22.45  m .

Since it is conceivable that in 2014 JW 80 will be in hydrostatic equilibrium due to its size and thus could be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown believes that it is in 2014 JW 80 to perhaps is a dwarf planet.

Provisions of the diameter for 2014 JW 80
year Dimensions km source
2018 352.0 Johnston
2018 329.0 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 14JW80 . SwRI (Space Science Department). Retrieved March 25, 2019.
  2. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 25, 2019.
  3. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 25, 2019.
  4. ↑ a b c (533563) 2014 JW80 at the IAU Minor Planet Center (English) Retrieved March 25, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPEC 2016-O216: 2014 JW80 . IAU . July 17, 2016. Retrieved March 25, 2019.
  7. ↑ (533563) 2014 JW80 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 25, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ (533563) 2014 JW80 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 25, 2019.