379 Huenna
From Infogalactic: the planetary knowledge core
| Discovery[1] | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | January 8, 1894 |
| Designations | |
|
Named after
|
Ven |
| 1894 AQ; A895 DB; A911 BA; 1948 XM | |
| Main belt (Themis) | |
| Orbital characteristics | |
| Epoch November 26, 2005 (JD 2453700.5) | |
| Aphelion | 3.729 AU (557.820 Gm) |
| Perihelion | 2.531 AU (378.674 Gm) |
| 3.130 AU (468.247 Gm) | |
| Eccentricity | 0.191 |
| 5.54 a (2022.660 d) | |
|
Average orbital speed
|
16.68 km/s |
| 153.439° | |
| Inclination | 1.669° |
| 172.279° | |
| 180.073° | |
| Known satellites | 1 (5.8±1.2 km)[2] |
| Physical characteristics | |
| Dimensions | 92.3±1.7 km (IRAS)[1] 98±3 km[2] |
| Mass | 3.83±0.19×1017 kg[2][3] |
|
Mean density
|
0.9±0.1 g/cm³[2][3] 1.2 g/cm³[4][5] |
| 0.0150 m/s² | |
| 0.0372 km/s | |
| 0.2926 d (7.022 h)[1] | |
| Albedo | 0.06[1] |
| Temperature | ~159 K |
|
Spectral type
|
C[3] |
| 8.87[1] | |
379 Huenna is a large asteroid orbiting in the asteroid belt. It is part of the Themis family, and thus a C-type asteroid and consequently composed mainly of carbonaceous material.
It was discovered by Auguste Charlois on January 8, 1894 in Nice. It is named after the Swedish island of Hven, the site of two observatories.
A satellite, 7 km across and designated S/2003 (379) 1, was discovered on August 14, 2003 by Jean-Luc Margot using the Keck II adaptive optics telescope at Mauna Kea.[6] The moon orbits 3400±11 km away in 80.8±0.36 d with an eccentricity of 0.334±0.075.[5] The system is loosely bound[4] as Huenna has a hill sphere with a radius of about 20,000 km.[2]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 2.2 2.3 2.4 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
External links
- Orbital simulation from JPL (Java) / Ephemeris
- Orbits of Binary Asteroids with Adaptive Optics (VLT images)
