Astronomy:(524435) 2002 CY248

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(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
Minor planet categoryTNO[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)
|{{{apsis}}}|helion}}53.081 AU
|{{{apsis}}}|helion}}39.404 AU
46.243 AU
Eccentricity0.1479
Orbital period314.47 yr (114,859 d)
Mean anomaly233.51°
Mean motion0° 0m 11.16s / day
Inclination7.0487°
Longitude of ascending node300.74°
336.77°
Physical characteristics
Mean diameter404 km[5]
449 km[6]
Geometric albedo0.06 (assumed)[6]
0.09 (assumed)[5]
Absolute magnitude (H)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 astronomical unit|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

  1. ↑ 1.0 1.1 1.2 1.3 "2002 CY248". Minor Planet Center. https://www.minorplanetcenter.net/db_search/show_object?object_id=2002+CY248. Retrieved 23 February 2018. 
  2. ↑ "List Of Transneptunian Objects". Minor Planet Center. http://www.minorplanetcenter.org/iau/lists/TNOs.html. Retrieved 23 February 2018. 
  3. ↑ 3.0 3.1 3.2 3.3 3.4 3.5 "JPL Small-Body Database Browser: (2002 CY248)". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=3117451. Retrieved 23 February 2018. 
  4. ↑ 4.0 4.1 Buie, Marc W.. "Orbit Fit and Astrometric record for 02CY248". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/02CY248.html. Retrieved 2018-02-17. 
  5. ↑ 5.0 5.1 5.2 5.3 Johnston, Wm. Robert (30 December 2017). "List of Known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 23 February 2018. 
  6. ↑ 6.0 6.1 6.2 6.3 6.4 Brown, Michael E.. "How many dwarf planets are there in the outer solar system?". California Institute of Technology. http://web.gps.caltech.edu/~mbrown/dps.html. Retrieved 23 February 2018. 
  7. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. https://www.minorplanetcenter.net/iau/ECS/MPCArchive/MPCArchive_TBL.html. Retrieved 29 May 2019. 

External links



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