(79983) 1999 DF9
From Wikipedia, the free encyclopedia
- The correct title of this article is (79983) 1999 DF9. It features superscript or subscript characters that are substituted or omitted because of technical limitations.
| Discovery A | |
|---|---|
| Discoverer | C. Trujillo, D. C. Jewitt, and J. X. Luu |
| Discovery date | February 20, 1999 |
| Alternate designations B |
none |
| Category | TNO (cubewano) |
| Orbital elements C | |
|
|
|
| Eccentricity (e) | 0.145 |
| Semi-major axis (a) | 46.531 AU |
| Perihelion (q) | 39.797 AU |
| Aphelion (Q) | 53.264 AU |
| Orbital period (P) | 115934 d (317.41 a) |
| Mean orbital speed | ? |
| Inclination (i) | 9.8° |
| Longitude of the ascending node (Ω) |
334.9° |
| Argument of perihelion (ω) |
178.3° |
| Mean anomaly (M) | 8.1° |
| Physical characteristics D | |
| Dimensions | 265 km |
| Mass | ? |
| Density | ? |
| Surface gravity | ? |
| Escape velocity | ? |
| Rotation period | ? |
| Spectral class | ? |
| Absolute magnitude | 6.1 |
| Albedo (geometric) | ? |
| Mean surface temperature |
? |
(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.
[edit] References
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
| Minor planets | ||
|---|---|---|
| Previous minor planet | (79983) 1999 DF9 | Next minor planet |
| List of asteroids | ||
Vulcanoids · Near-Earth asteroids · Main belt · Jupiter Trojans · Centaurs · Damocloids · Comets · Trans-Neptunians (Kuiper belt • Scattered disc • Oort cloud)
For other objects and regions, see Asteroid groups and families, Binary asteroids, Asteroid moons and the Solar System.
For a complete listing, see List of asteroids. See also Pronunciation of asteroid names and Meanings of asteroid names.
 |
This article about a centaur or trans-Neptunian object is a stub. You can help Wikipedia by expanding it. |
