(523680) 2013 YJ 151

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Asteroid
(523680) 2013 YJ 151
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type SDO ,
"Distant Object"
Major semi-axis 72,098  AU
eccentricity 0.434
Perihelion - aphelion 40.838 AU - 103.359 AU
Inclination of the orbit plane 33.7 °
Length of the ascending node 302.9 °
Argument of the periapsis 141.6 °
Time of passage of the perihelion January 6, 1999
Sidereal period 612 a 2.4 M.
Mean orbital velocity 3.479 km / s
Physical Properties
Medium diameter approx. 343 km
Albedo 0.08-0.09
Absolute brightness 5.6 - 5.7 mag
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery December 26, 2013
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.

(523680) 2013 YJ 151 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

2013 YJ 151 was discovered on December 26, 2013 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 1 , 8 m Ritchey Chretien Telescope (PS1) at Haleakalā Observatory ( Maui ) on November 10, 2011, discovered. The discovery was announced on July 17, 2016 the asteroid was on 25 September 2018 the IAU , the Minor Planet -number five hundred and twenty-three thousand six hundred and eighty .

After its discovery, in 2013 YJ 151 could be identified in photos up to November 10, 2011, which were also taken as part of the Pan-STARRS program, and thus its observation period was extended by two 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 there were a total of 100 observations over a period of 7 years. The last observation so far was carried out again at the Pan-STARRS telescope in January 2018. (As of March 20, 2019)

properties

Orbit

2013 YJ 151 orbits the sun in 612.20 years on a strongly elliptical orbit between 40.84  AU and 103.36 AU from its center. The orbit eccentricity is 0.434, the orbit is 33.69 ° inclined to the ecliptic . The planetoid is currently 42.84 AU from the sun. The last time he went through perihelion was in 1999, so the next perihelion should take place in 2611.

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 343 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 370,000 km 2 . The apparent magnitude of 2013 YJ 151 is 22.15  m .

Since it is conceivable that 2013 YJ 151 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 . Brown Mike believes that it is in 2013 YJ 151 to perhaps is a dwarf planet.

Provisions of the diameter for 2013 YJ 151
year Dimensions km source
2018 336.0 Johnston
2018 343.0 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 523680 . SwRI (Space Science Department). Retrieved March 20, 2019.
  2. ↑ a b MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 20, 2019.
  3. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 20, 2019.
  4. ↑ a b c (523680) 2013 YJ151 at the IAU Minor Planet Center (English) Retrieved March 20, 2019.
  5. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  6. ↑ MPC : MPEC 2016-O190: 2013 YJ151 . IAU . July 17, 2016. Retrieved March 20, 2019.
  7. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 20, 2019. Reference there: MPC 111779
  8. ↑ (523680) 2013 YJ151 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 20, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  9. ↑ (523680) 2013 YJ151 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 20, 2019.