(79983) 1999 DF9

From Wikipedia, the free encyclopedia
Jump to: navigation, search
(79983) 1999 DF9
Discovery
Discovered by C. Trujillo, D. C. Jewitt, and J. X. Luu
Discovery date February 20, 1999
Designations
none
Minor planet category TNO (cubewano)
Orbital characteristics
Epoch 20070410 JD
Aphelion 53.264 AU
Perihelion 39.797 AU
46.531 AU
Eccentricity 0.145
115934 d (317.41 a)
?
8.1°
Inclination 9.8°
334.9°
178.3°
Physical characteristics
Dimensions 265 km
Mass ?
Mean density
?
?
?
?
Albedo ?
Temperature ?
Spectral type
?
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[edit]

1. http://cfa-www.harvard.edu/iau/lists/TNOs.html 2. http://www.johnstonsarchive.net/astro/tnoslist.html 3. http://hamilton.dm.unipi.it/cgi-bin/astdys/astibo?objects:1999DF9;main