(523723) 2014 MY 69

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Asteroid
(523723) 2014 MY 69
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type DO (E SDO ) or
CKBO ( «Hot» ),
«Distant Object»
Major semi-axis 40.524  AU
eccentricity 0.054
Perihelion - aphelion 38,356 AU - 42,692 AU
Inclination of the orbit plane 17.4 °
Length of the ascending node 1 °
Argument of the periapsis 205.1 °
Time of passage of the perihelion June 25, 1928
Sidereal period 257 a 11.8 M
Mean orbital velocity 4.641 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 June 28, 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.

(523723) 2014 MY 69 is a large trans-Neptunian object in the Kuiper Belt , which is classified as an extended Scattered Disk Object (DO) or as a Cubewano (CKBO) in terms of orbital dynamics. Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2014 MY 69 was recorded on June 28, 2014 by an astronomical team , consisting of B. Gibson, T. Goggia, N. Primak, A. Schultz and M. Willman, on images taken as part of the Pan-STARRS project with the 1st , 8 m Ritchey Chretien Telescope (PS1) at Haleakalā Observatory ( Maui ) on August 18, 2010, discovered. The discovery was announced on 16 July 2016 the asteroid was on 25 September 2018 the IAU , the Minor Planet -number five hundred and twenty-three thousand seven hundred twenty-three .

After its discovery, in 2014 MY 69 could be identified on photos, which were also taken as part of the Pan-STARRS, going back to August 18, 2010, thus extending 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 October 2018, there were a total of 161 observations over a period of 8 years. The last observation so far was carried out again on the Pan-STARRS telescope in November 2017. (As of March 24, 2019)

properties

Orbit

2014 MY 69 orbits the sun in 257.98 years on a slightly elliptical orbit between 38.35  AU and 42.69 AU from its center. The orbit eccentricity is 0.053, the orbit is 17.43 ° inclined to the ecliptic . Currently, the planetoid is 41.89 AU from the sun. He passed perihelion for the last time in 1928, so the next perihelion should take place in 2186.

Marc Buie ( DES ) classifies the planetoid as an extended SDO (ESDO or DO ), 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, however, lists him as Cubewano , whereby he would belong to the "hot" classic KBO in terms of rail dynamics .

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 MY 69 is 22.23  m .

Since it is conceivable that 2014 MY 69 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 MY 69 to perhaps is a dwarf planet.

Provisions of the diameter for 2014 MY 69
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 523723 . SwRI (Space Science Department). Retrieved March 24, 2019.
  2. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Accessed March 24, 2019.
  3. ↑ a b c (523723) 2014 MY69 at the IAU Minor Planet Center (English). Accessed March 24, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2016-O18: 2014 MY69 . IAU . July 16, 2016. Accessed March 24, 2019.
  6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 24, 2019. Reference there: MPC 111778
  7. ↑ (523723) 2014 MY69 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 24, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 24, 2019.
  9. ↑ (523723) 2014 MY69 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.