(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]
| 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 | |
| 404 km[5] 449 km[6] | |
| 0.06 (assumed)[6] 0.09 (assumed)[5] | |
| 5.2[3] · 5.5[6] | |
Orbit and classification
edit2002 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
editBased 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
editThis 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
editReferences
edit- ^ a b c d "2002 CY248". Minor Planet Center. Retrieved 23 February 2018.
- ^ "List Of Transneptunian Objects". Minor Planet Center. Retrieved 23 February 2018.
- ^ a b c d e f "JPL Small-Body Database Browser: (2002 CY248)" (2015-01-22 last obs.). Jet Propulsion Laboratory. Retrieved 23 February 2018.
- ^ a b 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.
- ^ a b c d Johnston, Wm. Robert (30 December 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. Retrieved 23 February 2018.
- ^ a b c d e Brown, Michael E. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. Retrieved 23 February 2018.
- ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 29 May 2019.
External links
edit- MPEC 2004-E32 : 2002 CZ154, 2002 CY248, 2002 CD251, 2002 XH91, 2003 FK127, 2003 FH129, Minor Planet Electronic Circular, 11 March 2004
- (524435) 2002 CY248 at AstDyS-2, Asteroids—Dynamic Site
- (524435) 2002 CY248 at the JPL Small-Body Database