53311 Deucalion
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Discovery
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| Discovered by | Deep Ecliptic Survey |
| Discovery date | April 18, 1999 |
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Designations
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| Named after | Deucalion |
| Alternate name(s) | 1999 HU11 |
| Minor planet category |
TNO (cubewano)[1] |
| Adjective | Deucalionean, Deucalionian |
| Epoch August 18, 2005 (JD 2453600.5) | |
| Aphelion | 47.157 AU |
| Perihelion | 41.579 AU |
| Semi-major axis | 44.368 AU |
| Eccentricity | 0.063 |
| Orbital period | 295.540 y |
| Average orbital speed | 4.467 km/s |
| Mean anomaly | 291.869 ° |
| Inclination | 0.366 ° |
| Longitude of ascending node | 51.570 ° |
| Argument of perihelion | 235.548 ° |
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Physical characteristics
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| Dimensions | 211 km[2] |
| Mass | ?×10? kg |
| Mean density | ? g/cm³ |
| Equatorial surface gravity | ? m/s² |
| Escape velocity | ? km/s |
| Rotation period | ? d |
| Albedo | 0.09? (assumed) |
| Temperature | ~42 K |
| Spectral type | ? |
| Absolute magnitude (H) | 6.6 |
53311 Deucalion (
/djuːˈkeɪliən/ dew-KAY-lee-ən; from Greek: Δευκαλίων, original provisional designation: 1999 HU11) is a trans-Neptunian object (TNO). It was discovered in 1999 by the Deep Ecliptic Survey (DES). It is classified as a cubewano, and named after Deucalion, from Greek mythology.
[edit] References
- ^ Marc W. Buie (2003-05-31). "Orbit Fit and Astrometric record for 53311". SwRI (Space Science Department). http://www.boulder.swri.edu/~buie/kbo/astrom/53311.html. Retrieved 2008-09-28.
- ^ Wm. Robert Johnston. "List of Known Trans-Neptunian Objects". Johnston's Archive. http://www.johnstonsarchive.net/astro/tnoslist.html. Retrieved 2008-09-28.
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