(523683) 2014 CP23 (provisional designation 2014 CP23) is a trans-Neptunian object from the scattered disc located in the outermost region of the Solar System It was discovered on 29 October 2011, by astronomers with the Pan-STARRS survey at Haleakala Observatory, Hawaii, United States.[1] The dwarf planet candidate measures approximately 267 kilometers (170 miles) in diameter.

(523683) 2014 CP23
Discovery[1]
Discovered byPan-STARRS 1
Discovery siteHaleakalā Obs.
Discovery date29 October 2011
Designations
(523683) 2014 CP23
2014 CP23
TNO[2] · SDO[3]
p-DP[4] · distant[1]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 2
Observation arc15.10 yr (5,517 d)
Aphelion66.519 AU
Perihelion38.119 AU
52.319 AU
Eccentricity0.2714
378.44 yr (138,225 d)
356.73°
0° 0m 9.36s / day
Inclination28.510°
145.86°
22.015°
Physical characteristics
266 km (est.)[4]
267 km (est.)[3]
0.08 (assumed)[4]
0.09 (assumed)[3]
6.1[1][2]

Orbit and classification

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2014 CP23 orbits the Sun at a distance of 38.1–66.5 AU once every 378 years and 5 months (138,225 days; semi-major axis of 52.32 AU). Its orbit has an eccentricity of 0.27 and an inclination of 29° with respect to the ecliptic.[2] It is a scattered-disc object on a moderately eccentric orbit that never comes closer than 8 AU to the orbit of Neptune.

The body's observation arc begins with a precovery taken by the Sloan Digital Sky Survey in January 2003, or more than 8 years prior to its official discovery observation at Haleakala Observatory.[1]

Numbering and naming

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This minor planet was numbered by the Minor Planet Center on 25 September 2018 and received the number 523683 in the minor planet catalog (M.P.C. 111779).[5] As of 2018, it has not been named.[1]

Physical characteristics

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According to American astronomer Michael Brown and the Johnston's archive, 2014 CP23 measures 266 and 267 kilometers in diameter based on an assumed albedo of 0.08 and 0.09, respectively.[3][4] On his website, Brown lists this object as a "possible" dwarf planet (200–400 km), which is the category with the lowest certainty in his 5-class taxonomic system.[4] As of 2018, no spectral type and color indices, nor a rotational lightcurve have been obtained from spectroscopic and photometric observations. The body's color, rotation period, pole and shape remain unknown.[2][6]

References

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  1. ^ a b c d e f "523683 (2014 CP23)". Minor Planet Center. Retrieved 3 December 2018.
  2. ^ a b c d e "JPL Small-Body Database Browser: 523683 (2014 CP23)" (2018-03-07 last obs.). Jet Propulsion Laboratory. Retrieved 3 December 2018.
  3. ^ a b c d Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 3 December 2018.
  4. ^ a b c d e Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 3 December 2018.
  5. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 3 December 2018.
  6. ^ "LCDB Data for (523683)". Asteroid Lightcurve Database (LCDB). Retrieved 3 December 2018.
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