(523684) 2014 CQ23

(523684) 2014 CQ23, provisional designation 2014 CQ23, is a trans-Neptunian object and cubewano from the Kuiper belt, located in the outermost region of the Solar System. It was discovered on 13 March 2011, by astronomers with the Pan-STARRS survey at Haleakala Observatory, Hawaii, United States.[1] The classical Kuiper belt object belongs to the hot population and is a dwarf planet candidate, as it measures approximately 330 kilometers (210 miles) in diameter.

(523684) 2014 CQ23
Discovery[1]
Discovered byPan-STARRS 1
Discovery siteHaleakalā Obs.
Discovery date13 March 2011
Designations
(523684) 2014 CQ23
2014 CQ23
TNO[2] · cubewano[3]
p-DP[4] · distant[1]
Orbital characteristics[2]
Epoch 27 April 2019 (JD 2458600.5)
Uncertainty parameter 2 · 1[1]
Observation arc16.04 yr (5,857 d)
Aphelion53.658 AU
Perihelion38.670 AU
46.164 AU
Eccentricity0.1623
313.66 yr (114,565 d)
302.71°
0° 0m 11.16s / day
Inclination8.6867°
30.646°
236.86°
Physical characteristics
Mean diameter
321 km (est.)[3]
343 km (est.)[4]
0.08 (assumed)[4]
0.09 (assumed)[3]
5.7[1][2]

    Orbit and classification

    2014 CQ23 is a cubewano, a classical, low-eccentricity object in the Kuiper belt, located in between the two resonant plutino and twotino populations, and belongs to the "stirred" hot population rather than to the cold population with low inclinations.

    It orbits the Sun at a distance of 38.7–53.7 AU once every 313 years and 8 months (114,565 days; semi-major axis of 46.16 AU). Its orbit has an eccentricity of 0.16 and an inclination of 9° with respect to the ecliptic.[2]

    Numbering and naming

    This minor planet was numbered by the Minor Planet Center on 25 September 2018 and received the number 523687 in the minor planet catalog (M.P.C. 111779).[5] As of 2018, it has not been named.[1]

    Physical characteristics

    According to the American astronomer Michael Brown, 2014 CQ23 measures 343 kilometers in diameter based on an assumed albedo of 0.08.[4] On his website, Michael 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] Similarly, Johnston's archive estimates a diameter 321 kilometers using an albedo of 0.09.[3] As of 2018, neither a spectral type or the color indices have been determined, nor a rotational lightcurve has been obtained from spectroscopic and photometric observations. The body's color, rotation period, pole and shape remain unknown.[2][6]

    References
    1. "523684 (2014 CQ23)". Minor Planet Center. Retrieved 30 November 2018.
    2. "JPL Small-Body Database Browser: 523684 (2014 CQ23)" (2018-03-18 last obs.). Jet Propulsion Laboratory. Retrieved 30 November 2018.
    3. Johnston, Wm. Robert (7 October 2018). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 30 November 2018.
    4. Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 29 November 2018.
    5. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 30 November 2018.
    6. "LCDB Data for (523684)". Asteroid Lightcurve Database (LCDB). Retrieved 30 November 2018.

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