379 Huenna

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379 Huenna

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
Epoch November 26, 2005 (JD 2453700.5)
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
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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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