379 Huenna

Last updated
379 Huenna
379 Huenna orbit on 13 Jul 2011.png
Orbital diagram
Discovery [1]
Discovered by Auguste Charlois
Discovery date8 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]

    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.

    Contents

    It was discovered by Auguste Charlois on 8 January 1894 in Nice. It is the Latin name for the Swedish island of Ven, the site of two observatories. This island is where Tycho Brahe built his observatory. [6]

    Satellite

    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. [7] 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]

    The orbit of Huenna's satellite HuennaOrb.jpg
    The orbit of Huenna's satellite

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    References

    1. 1 2 3 4 5 6 "JPL Small-Body Database Browser: 379 Huenna (1894 AQ)". Jet Propulsion Laboratory. 2012-01-03 last obs. Archived from the original on 4 June 2019. Retrieved 10 May 2016.
    2. 1 2 3 4 5 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. S2CID   119244052.
    3. 1 2 3 Jim Baer (12 December 2010). "Recent Asteroid Mass Determinations". Personal Website. Archived from the original on 2 July 2013. Retrieved 3 February 2012.
    4. 1 2 Franck Marchis (May 2005). "379 Huenna and S/2003 (379) 1". UCB. Retrieved 3 February 2012.
    5. 1 2 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.
    6. Peebles, Curtis (2016), Asteroids: a History, Smithsonian, p. 159, ISBN   9781944466046.
    7. "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.