(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]

    (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]

    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

    References

    1. 1 2 3 4 "2002 CY248". Minor Planet Center. Retrieved 23 February 2018.
    2. ↑ "List Of Transneptunian Objects". Minor Planet Center. Retrieved 23 February 2018.
    3. 1 2 3 4 5 6 "JPL Small-Body Database Browser: (2002 CY248)" (2015-01-22 last obs.). Jet Propulsion Laboratory. Retrieved 23 February 2018.
    4. 1 2 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. 1 2 3 4 Johnston, Wm. Robert (30 December 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 23 February 2018.
    6. 1 2 3 4 5 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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