(523712) 2014 JS 80

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Asteroid
(523712) 2014 JS 80
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO ,
"Distant Object"
Major semi-axis 48.455  AU
eccentricity 0.174
Perihelion - aphelion 40.012 AU - 56.898 AU
Inclination of the orbit plane 15.1 °
Length of the ascending node 125.9 °
Argument of the periapsis 174.8 °
Time of passage of the perihelion May 28, 2019
Sidereal period 337 a 3.6 M
Mean orbital velocity 4.244 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 6, 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.

(523712) 2014 JS 80 is a large Trans-Neptunian object that is classified as a Scattered Disk Object (SDO) in terms of orbital dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2014 JS 80 was discovered on May 6, 2014 by a team of astronomers consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman, in images taken as part of the Pan-STARRS project with the 1st , 8 m Ritchey Chretien Telescope (PS1) at Haleakalā Observatory ( Maui ) on May 9, 2010, discovered. The discovery was announced on July 17, 2016 the asteroid was on 25 September 2018 the IAU , the Minor Planet -number 523 712 .

After its discovery in 2014, JS 80 could be identified on photos, which were also taken as part of the Pan-STARRS, going back to May 9, 2010 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 120 observations were made over a period of 8 years. The last observation so far was carried out again on the Pan-STARRS telescope in August 2017. (As of March 24, 2019)

properties

Orbit

2014 JS 80 orbits the sun in 337.30 years on a slightly elliptical orbit between 40.01  AU and 56.90 AU from its center. The orbital eccentricity is 0.174, the orbit is 15.06 ° inclined to the ecliptic . The planetoid is currently 40.02 AU from the Sun. The last time he passed through perihelion in 2019, the next perihelion should therefore take place in 2356.

Marc Buie ( DES ) classifies the planetoid as SDO , 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” . The Johnston's Archive lists it as "other TNO" , which means it is definitely not a Cubewano or Resonantes KBO .

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 JS 80 is 21.92  m .

Since it is conceivable that 2014 JS 80 will be 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 believes that it is in 2014 JS 80 to perhaps is a dwarf planet.

Provisions of the diameter for 2014 JS 80
year Dimensions km source
2018 306.0 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 523712 . SwRI (Space Science Department). Retrieved March 24, 2019.
  2. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 24, 2019.
  3. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Accessed March 24, 2019.
  4. ↑ a b c (523712) 2014 JS80 at the IAU Minor Planet Center (English) Accessed March 24, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPEC 2016-O212: 2014 JS80 . IAU . July 17, 2016. Accessed March 24, 2019.
  7. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 24, 2019. Reference there: MPC 111779
  8. ↑ (523712) 2014 JS80 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 24, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  9. ↑ (523712) 2014 JS80 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 24, 2019.