| Discovery[1] | |
|---|---|
| Discovered by | Pan-STARRS1 |
| Discovery site | Haleakalā Obs. |
| Discovery date | 29 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 parameter2 | |
| Observation arc | 15.10 yr (5,517 d) |
| Aphelion | 66.519 AU |
| Perihelion | 38.119 AU |
| 52.319 AU | |
| Eccentricity | 0.2714 |
| 378.44 yr (138,225 d) | |
| 356.73° | |
| 0° 0m 9.36s / day | |
| Inclination | 28.510° |
| 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] | |
(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.
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]
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]
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]
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