(523683) 2014 CP23

(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
Mean diameter
266 km (est.)[4]
267 km (est.)[3]
0.08 (assumed)[4]
0.09 (assumed)[3]
6.1[1][2]

    Orbit and classification

    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 on January 2003, or more than 8 years prior to its official discovery observation at Haleakala Observatory.[1]

    Numbering and naming

    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

    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
    1. "523683 (2014 CP23)". Minor Planet Center. Retrieved 3 December 2018.
    2. "JPL Small-Body Database Browser: 523683 (2014 CP23)" (2018-03-07 last obs.). Jet Propulsion Laboratory. Retrieved 3 December 2018.
    3. Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 3 December 2018.
    4. 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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