(523684) 2014 CQ 23

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Asteroid
(523684) 2014 CQ 23
Properties of the orbit ( animation )
Epoch:  April 27, 2019 ( JD 2,458,600.5)
Orbit type CKBO ( "Hot" )
"Distant Object"
Major semi-axis 46.164  AU
eccentricity 0.162
Perihelion - aphelion 38.67 AU - 53.658 AU
Inclination of the orbit plane 8.7 °
Length of the ascending node 30.6 °
Argument of the periapsis 236.9 °
Time of passage of the perihelion March 27, 2069
Sidereal period 313 a 7.9 m
Mean orbital velocity 4,348 km / s
Physical Properties
Medium diameter approx. 343 km
Albedo 0.08-0.09
Absolute brightness 5.7 likes
history
Explorer Pan-STARRS :
B. Gibson
T. Goggia
N. Primak
A. Schultz
M. Willman
Date of discovery February 10, 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.

(523684) 2014 CQ 23 is a large trans-Neptunian object in the Kuiper Belt , which is classified as Cubewano (CKBO) in terms of railway dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .

discovery

2014 CQ 23 was discovered on February 10, 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 1 , 8 m Ritchey Chretien Telescope (PS1) at Haleakalā Observatory ( Maui ) on March 13, 2011, discovered. The discovery was announced on July 17, 2016 the asteroid was on 25 September 2018 the IAU , the Minor Planet -number 523684 .

After its discovery, in 2014 CQ 23 could be identified on photos taken as part of the Sloan Digital Sky Survey program (SDSS) at the Apache Point Observatory ( New Mexico ) up to March 5, 2002, thus reversing its observation period Extend twelve years to more accurately calculate its orbit. Since then, the planetoid has been observed through various earth-based telescopes. In October 2018, there were a total of 144 observations over a period of 17 years. The last observation so far was carried out in March 2018 at the Pan-STARRS telescope. (As of March 20, 2019)

properties

Orbit

2014 CQ 23 orbits the sun in 313.66 years on a slightly elliptical orbit between 38.67  AU and 53.66 AU from its center. The orbit eccentricity is 0.162, the orbit is inclined at 8.69 ° to the ecliptic . The planetoid is currently 43.10 AU from the Sun. He will next pass perihelion in 2069, so the last perihelion should have occurred in 1755.

Marc Buie ( DES ) classifies the asteroid as Cubewano , whereby it belongs to the orbital dynamics “hot” classical KBO , 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” .

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 .

Since it is conceivable that 2014 CQ 23 will be 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 expects that it is at 2014 CQ 23 to perhaps is a dwarf planet.

Provisions of the diameter for 2014 CQ 23
year Dimensions km source
2018 321.0 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 523684 . SwRI (Space Science Department). Retrieved March 20, 2019.
  2. ↑ a b c Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 20, 2019.
  3. ↑ a b c (523684) 2014 CQ23 at the IAU Minor Planet Center (English) Retrieved March 20, 2019.
  4. ↑ v ≈ π * a / period (1 + sqrt (1-e²))
  5. ↑ MPC : MPEC 2016-O126: 2014 CQ23 . IAU . July 17, 2016. Retrieved March 20, 2019.
  6. ↑ MPC : MPC / MPO / MPS Archive . IAU . Retrieved March 20, 2019. Reference there: MPC 111779
  7. ↑ (523684) 2014 CQ23 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 20, 2019. Template: JPL Small-Body Database Browser / Maintenance / Alt
  8. ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 20, 2019.
  9. ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 20, 2019.