54598 Bienor
From Wikipedia, the free encyclopedia
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Discovery
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| Discovered by | M. W. Buie, S. D. Kern, R. L. Millis, L. H. Wasserman |
| Discovery date | August 27, 2000 |
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Designations
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| Alternate name(s) | 2000 CQ243 |
| Minor planet category |
Centaur |
| Epoch June 14, 2006 (JD 2453900.5) | |
| Aphelion | 19.779 AU (2958.869 Gm) |
| Perihelion | 13.165 AU (1969.451 Gm) |
| Semi-major axis | 16.472 AU (2464.160 Gm) |
| Eccentricity | 0.201 |
| Orbital period | 66.85 a (24418.202 d) |
| Average orbital speed | 7.26 km/s |
| Mean anomaly | 243.354° |
| Inclination | 20.762° |
| Longitude of ascending node | 337.834° |
| Argument of perihelion | 153.272° |
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Physical characteristics
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| Dimensions | 207±30 km[1] |
| Albedo | 0.03-0.05[1] |
| Temperature | ~69 K |
| Apparent magnitude | ~20.1[2] |
| Absolute magnitude (H) | 7.6[3] |
54598 Bienor (
/bɨ.ˈiːnɔr/ bi-YEE-nor; from Greek: Βιάνωρ Bianor) is a centaur that crosses the orbit of Uranus. It is named after the mythological Centaur Bienor. Its closest approach to the Sun (perihelion) is 13.2 AU.[3] As of 2012[update], Bienor is currently 16.9 AU from the Sun,[2] and will reach perihelion in 2027.[3]
Mike Brown's automatically updated website lists it as a possible dwarf planet with a measured diameter of 206km.[4] Other centaurs with measured diameters listed as possible dwarf planets include 10199 Chariklo and 2060 Chiron.[4]
[edit] See also
[edit] References
- ^ a b Stansberry, Grundy, Brown, Spencer, Trilling, Cruikshank, Luc Margot Physical Properties of Kuiper Belt and Centaur Objects: Constraints from Spitzer Space Telescope (2007) Preprint arXiv
- ^ a b "AstDyS (54598) Bienor Ephemerides". Department of Mathematics, University of Pisa, Italy. http://hamilton.dm.unipi.it/astdys/index.php?pc=1.1.3.0&n=Bienor. Retrieved 2012-01-16.
- ^ a b c "JPL Small-Body Database Browser: 54598 Bienor (2000 QC243)". Jet Propulsion Laboratory. 2011-10-19 last obs. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=Bienor. Retrieved 2012-01-16.
- ^ a b Michael E. Brown. "How many dwarf planets are there in the outer solar system? (updates daily)". California Institute of Technology. http://www.gps.caltech.edu/~mbrown/dps.html. Retrieved 2012-01-16.
[edit] External links
- Orbital simulation from JPL (Java) / Ephemeris
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