(524435) 2002 CY 248
Asteroid 2002 CY 248 |
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Properties of the orbit ( animation ) | |
Orbit type |
CKBO ( "hot" ), "Distant Object" |
Major semi-axis | 46.107 AU |
eccentricity | 0.15 |
Perihelion - aphelion | 39,198 AU - 53,016 AU |
Inclination of the orbit plane | 7.1 ° |
Length of the ascending node | 300.8 ° |
Argument of the periapsis | 337.7 ° |
Time of passage of the perihelion | February 14, 2129 |
Sidereal period | 313 a 1.0 M. |
Mean orbital velocity | 4.351 km / s |
Physical Properties | |
Medium diameter | approx. 373 km |
Albedo | 0.08-0.09 |
Absolute brightness | 5.4 - 5.6 mag |
history | |
Explorer | Robert L. Millis Marc W. Buie |
Date of discovery | February 6, 2002 |
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items. |
2002 CY 248 is a large trans-Neptunian object in the Kuiper belt , which is classified as Cubewano (CKBO) in terms of railway dynamics . Due to its size, the asteroid may be one of the dwarf planet candidates .
discovery
2002 CY 248 was discovered on February 6, 2002 by Robert Millis and Marc Buie with the 4-meter telescope at the Kitt Peak Observatory ( Arizona ). The discovery was announced on March 19, 2002 along with 2001 DU 108 , 2002 CZ 248 , 2002 CA 249 , 2002 CB 249, and 2002 CC 249 .
The observation arc of the planetoid begins with the official observation on February 6, 2002. Since then, the planetoid has been observed through various earth-based telescopes. In December 2018, a total of 131 observations were made over a period of 17 years. The last observation so far was carried out in March 2018 at the Pan-STARRS telescope (PS1). (As of March 14, 2019)
properties
Orbit
2002 CY 248 orbits the sun in 313.08 years on a slightly elliptical orbit between 39.20 AU and 53.02 AU from its center. The orbital eccentricity is 0.150, the orbit is 7.06 ° inclined to the ecliptic . The planetoid is currently 50.79 AU from the sun. The next time it passes through perihelion in 2129, the last perihelion should have been in 1816.
Both Marc Buie ( DES ) and the Minor Planet Center classify the asteroids as Cubewano , where he ground dynamically to the "hot" classical KBO heard; the latter also lists it as a non-SDO and generally as a “distant object” .
size
A diameter of 373 km is currently assumed, based on a reflectivity of 8% and an absolute brightness of 5.6 m . Based on this diameter, the total area is around 437,000 km². The apparent magnitude of 2002 CY 248 is 22.41 m .
Since it is conceivable that 2002 CY 248 is in hydrostatic equilibrium due to its size and could therefore be largely round, it may meet the criteria for classification as a dwarf planet . Mike Brown expects that it is at 2002 CY 248 to perhaps is a dwarf planet.
year | Dimensions km | source |
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2018 | 404.0 | Johnston |
2018 | 373.0 | Brown |
The most precise determination is marked in bold . |
See also
- List of trans-Neptunian objects
- List of dwarf planets of the solar system
- List of asteroids
- List of moons from asteroids
Web links
- How many dwarf planets are there in the outer solar system? Current list of the largest TNOs from Mike Brown
- Free the dwarf planets! Mike Brown's column on the IAU and the dwarf planets regarding their classifications (23 August 2011)
Individual evidence
- ^ A b Marc W. Buie : Orbit Fit and Astrometric record for 02CY248 . SwRI (Space Science Department). Retrieved March 14, 2019.
- ↑ a b MPC : MPEC 2010-S44: Distant Minor Planets (2010 OCT.11.0 TT) . IAU . September 25, 2010. Accessed March 14, 2019.
- ↑ a b c (524435) 2002 CY248 at the IAU Minor Planet Center (English) Retrieved March 14, 2019.
- ↑ v ≈ π * a / period (1 + sqrt (1-e²))
- ↑ MPC : MPEC 2002-F27: 2001 DU108, 2002 CY248, 2002 CZ248, 2002 CA249, 2002 CB249, 2002 CC249 . IAU . March 19, 2002. Retrieved March 14, 2019.
- ↑ (524435) 2002 CY248 in the Small-Body Database of the Jet Propulsion Laboratory (English). Retrieved March 14, 2019.
- ↑ MPC : MPEC List Of Centaurs and Scattered-Disk Objects . IAU . Retrieved March 14, 2019.
- ↑ (524435) 2002 CY248 in the database of the "Asteroids - Dynamic Site" (AstDyS-2, English).
- ↑ a b Mike Brown : How many dwarf planets are there in the outer solar system? . CalTech . November 12, 2018. Retrieved March 14, 2019.
- ^ Wm. R. Johnston: List of Known Trans-Neptunian Objects . Johnston's Archives. October 7, 2018. Retrieved March 14, 2019.