379 Huenna
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| Discovery A | |
|---|---|
| Discoverer | Auguste Charlois |
| Discovery date | January 8, 1894 |
| Alternate designations B |
1894 AQ; A895 DB; A911 BA; 1948 XM |
| Category | Main belt (Themis) |
| Orbital elements C | |
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| Eccentricity (e) | 0.191 |
| Semi-major axis (a) | 468.247 Gm (3.130 AU) |
| Perihelion (q) | 378.674 Gm (2.531 AU) |
| Aphelion (Q) | 557.820 Gm (3.729 AU) |
| Orbital period (P) | 2022.660 d (5.54 a) |
| Mean orbital speed | 16.68 km/s |
| Inclination (i) | 1.669° |
| Longitude of the ascending node (Ω) |
172.279° |
| Argument of perihelion (ω) |
180.073° |
| Mean anomaly (M) | 153.439° |
| Physical characteristics D | |
| Dimensions | 92.3±1.7 km [1] |
| Mass | 4.8×1017 kg |
| Density | 1.2 g/cm³ [2] |
| Surface gravity | 0.0150 m/s² |
| Escape velocity | 0.0372 km/s |
| Rotation period | 0.2926 d (7.022 h) [3] |
| Spectral class | C |
| Absolute magnitude | 8.87 |
| Albedo (geometric) | 0.06 |
| Mean surface temperature |
~159 K |
379 Huenna is a rather large Main belt asteroid. It is classified as a C-type asteroid and is probably composed 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. The moon orbits 3400±11 km away in 80.8±0.36 d with an eccentricity of 0.334±0.075 [4].
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