Discovery [1] [2] | |
---|---|
Discovered by | M. W. Buie |
Discovery site | Kitt Peak National Obs. |
Discovery date | 6 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 arc | 12.96 yr (4,733 days) |
Aphelion | 53.081 AU |
Perihelion | 39.404 AU |
46.243 AU | |
Eccentricity | 0.1479 |
314.47 yr (114,859 d) | |
233.51 ° | |
0° 0m 11.16s / day | |
Inclination | 7.0487° |
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]
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]
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]
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]