(524435) 2002 CY248

(524435) 2002 CY248, provisional designation 2002 CY248, is a trans-Neptunian object and weak dwarf-planet candidate from the classical Kuiper belt in the outermost region of the Solar System, approximately 400–450 kilometers (250–280 mi) in diameter. It was first observed on 6 February 2002, by American astronomer Marc Buie at the Kitt Peak National Observatory in Arizona, United States.[1]

(524435) 2002 CY248
Discovery [1][2]
Discovered byM. W. Buie
Discovery siteKitt Peak National Obs.
Discovery date6 February 2002
Designations
(524435) 2002 CY248
2002 CY248
TNO [3] · cubewano [4][5]
p-DP [6] · distant [1]
Orbital characteristics [3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 3
Observation arc12.96 yr (4,733 days)
Aphelion53.081 AU
Perihelion39.404 AU
46.243 AU
Eccentricity0.1479
314.47 yr (114,859 d)
233.51°
0° 0m 11.16s / day
Inclination7.0487°
300.74°
336.77°
Physical characteristics
Mean diameter
404 km[5]
449 km[6]
0.06 (assumed)[6]
0.09 (assumed)[5]
5.2[3] · 5.5[6]

    Orbit and classification

    2002 CY248 orbits the Sun at a distance of 39.4–53.1 AU once every 314 years and 6 months (114,859 days; semi-major axis of 46.2 AU). Its orbit has an eccentricity of 0.15 and an inclination of 7° with respect to the ecliptic.[3] The body's observation arc begins at Kitt Peak with its official first observation on 6 February 2002.[1] A 10-million-year integration of the orbit shows that it is a Classical Kuiper belt object that does not get closer to the Sun than 38.8 AU (5.80 billion km) or further than 54 AU.[4]

    Physical characteristics

    Based on an absolute magnitude of 5.2,[3] and an assumed albedo of 0.09, the Johnston's archive estimates a mean-diameter of approximately 404 kilometers (251 mi),[5] while astronomer Michael Brown assumes an albedo of 0.06 and calculates a diameter of 449 kilometers (279 mi) using a fainter magnitude of 5.5. Brown also characterizes the object as a "probable dwarf planet", an intermediate category in his classification scheme (also see list of candidates).[6]

    As of 2018, no rotational lightcurve of this object has been obtained from photometric observations. The object's rotation period, pole and shape remain unknown.[3]

    Numbering and naming

    This minor planet was numbered by the Minor Planet Center on 18 May 2019 (M.P.C. 114619). As of 2019, it has not been named.[7]

    See also
    • List of Solar System objects most distant from the Sun in 2015

    References
    1. "2002 CY248". Minor Planet Center. Retrieved 23 February 2018.
    2. "List Of Transneptunian Objects". Minor Planet Center. Retrieved 23 February 2018.
    3. "JPL Small-Body Database Browser: (2002 CY248)" (2015-01-22 last obs.). Jet Propulsion Laboratory. Retrieved 23 February 2018.
    4. Buie, Marc W. "Orbit Fit and Astrometric record for 02CY248". SwRI (Space Science Department). Archived from the original on 18 February 2018. Retrieved 17 February 2018.
    5. Johnston, Wm. Robert (30 December 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 23 February 2018.
    6. Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 23 February 2018.
    7. "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 29 May 2019.

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