astro.wikisort.org - Asteroid

(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 by	M. W. Buie
Discovery site	Kitt Peak National Obs.
Discovery date	6 February 2002
Designations
MPC designation	(524435) 2002 CY248
Alternative designations	2002 CY248
Minor planet category	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
Semi-major axis	46.243 AU
Eccentricity	0.1479
Orbital period (sidereal)	314.47 yr (114,859 d)
Mean anomaly	233.51°
Mean motion	0° 0m 11.16s / day
Inclination	7.0487°
Longitude of ascending node	300.74°
Argument of perihelion	336.77°
Physical characteristics
Mean diameter	404 km[5] 449 km[6]
Geometric albedo	0.06 (assumed)[6] 0.09 (assumed)[5]
Absolute magnitude (H)	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

References

External links

• 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
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• (524435) 2002 CY248 at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (524435) 2002 CY248

2002 CY248 ist ein großes transneptunisches Objekt im Kuipergürtel, das bahndynamisch als Cubewano (CKBO) eingestuft wird. Aufgrund seiner Größe gehört der Asteroid möglicherweise zu den Zwergplanetenkandidaten.

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- [en] (524435) 2002 CY248

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