379 Huenna
Huenna (minor planet designation: 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.
| Discovery[1] | |
|---|---|
| Discovered by | Auguste Charlois |
| Discovery date | 8 January 1894 |
| Designations | |
| (379) Huenna | |
| Pronunciation | /hjuːˈɛnə/ |
Named after | Ven |
| 1894 AQ; A895 DB; A911 BA; 1948 XM | |
| Main belt (Themis) | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 122.26 yr (44656 d) |
| Aphelion | 3.7186 AU (556.29 Gm) |
| Perihelion | 2.5540 AU (382.07 Gm) |
| 3.1363 AU (469.18 Gm) | |
| Eccentricity | 0.18567 |
| 5.55 yr (2028.7 d) | |
| 126.109° | |
| 0° 10m 38.82s / day | |
| Inclination | 1.6699° |
| 172.036° | |
| 179.961° | |
| Known satellites | 1 (5.8±1.2 km)[2] |
| Physical characteristics | |
Mean diameter | 92.33±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] |
| 14.141 h (0.5892 d)[1] | |
| 0.0587±0.002[1] | |
| C[3] | |
| 8.87[1] | |
It was discovered by Auguste Charlois on 8 January 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 14 August 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
- "JPL Small-Body Database Browser: 379 Huenna (1894 AQ)". Jet Propulsion Laboratory. 2012-01-03 last obs. Retrieved 10 May 2016.
- Marchis, Franck; P. Descamps; J. Berthier; D. hestroffer; F. vachier; M. Baek; et al. (2008). "Main Belt Binary Asteroidal Systems With Eccentric Mutual Orbits". Icarus. 195 (1): 295–316. arXiv:0804.1385. Bibcode:2008Icar..195..295M. doi:10.1016/j.icarus.2007.12.010.
- Jim Baer (12 December 2010). "Recent Asteroid Mass Determinations". Personal Website. Archived from the original on 2 July 2013. Retrieved 3 February 2012.
- Franck Marchis (May 2005). "379 Huenna and S/2003 (379) 1". UCB. Retrieved 3 February 2012.
- Wm. Robert Johnston (25 November 2008). "(379) Huenna and S/2003 (379) 1". Johnston's Archive. Archived from the original on 11 December 2005. Retrieved 11 November 2005.
- "IAUC 8182: S/2003 (379) 1; 2003he, 2003hf; C/2003 H1; C/2001 Q4". IAU Central Bureau for Astronomical Telegrams. 15 August 2003. Retrieved 4 February 2012.
External links
- Lightcurve plot of 379 Huenna, Palmer Divide Observatory, B. D. Warner (2010)
- Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
- Asteroid Lightcurve Database (LCDB), query form (info)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- Orbits of Binary Asteroids with Adaptive Optics (VLT images, archived)
- 379 Huenna at AstDyS-2, Asteroids—Dynamic Site
- 379 Huenna at the JPL Small-Body Database
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