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Revision as of 01:44, 31 August 2016 by InternetArchiveBot (talk | contribs) (Rescuing 1 sources and tagging 0 as dead. #IABot (v1.2beta5))(diff) ← Previous revision | Latest revision (diff) | Newer revision → (diff)| Discovery | |
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| Discovered by | C. Trujillo, D. C. Jewitt, and J. X. Luu |
| Discovery date | 20 February 1999 |
| Designations | |
| Alternative designations | none |
| Minor planet category | TNO (cubewano) |
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 4 | |
| Observation arc | 1857 days (5.08 yr) |
| Aphelion | 53.761 AU (8.0425 Tm) |
| Perihelion | 39.802 AU (5.9543 Tm) |
| Semi-major axis | 46.782 AU (6.9985 Tm) |
| Eccentricity | 0.14919 |
| Orbital period (sidereal) | 319.98 yr (116872 d) |
| Mean anomaly | 18.014° |
| Mean motion | 0° 0 11.089 / day |
| Inclination | 9.7977° |
| Longitude of ascending node | 334.81° |
| Argument of perihelion | 178.06° |
| Earth MOID | 38.8129 AU (5.80633 Tm) |
| Jupiter MOID | 34.4104 AU (5.14772 Tm) |
| Physical characteristics | |
| Dimensions | 265 km |
| Synodic rotation period | 6.65 h (0.277 d) |
| Absolute magnitude (H) | 6.1 |
(79983) 1999 DF9, also written as (79983) 1999 DF9, is a cubewano. It travels in a highly eccentric orbit which has a perihelion (closest approach to the Sun) at 39.797 AU and an aphelion (farthest approach from the Sun) at 53.264 AU. It is about 265 km in diameter. It was discovered on February 20, 1999, by Jane X. Luu, Chadwick A. Trujillo and David C. Jewitt.
Due to its small size, it is unlikely to be classified as a dwarf planet.
References
- "JPL Small-Body Database Browser: 79983 (1999 DF9)". NASA/Jet Propulsion Laboratory. Retrieved 7 April 2016.
1. http://www.webcitation.org/5Pkgpyk4n?url=http%3A%2F%2Fcfa-www.harvard.edu%2Fiau%2Flists%2FTNOs.html 2. http://www.johnstonsarchive.net/astro/tnoslist.html 3. http://hamilton.dm.unipi.it/cgi-bin/astdys/astibo?objects:1999DF9;main
External links
| Minor planets navigator | |
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