Thyone (moon)

Thyone (pron-en|θaɪˈoʊni "thye-OH-nee," or as in Greek "Θυώνη)," also known as nowrap|Jupiter XXIX, is a retrograde irregular satellite of Jupiter. It was discovered by a team of astronomers from the University of Hawaii led by Scott S. Sheppard, et al. in 2001, and given the temporary designation nowrap|S/2001 J 2. [ [http://cfa-www.harvard.edu/iauc/07900/07900.html IAUC 7900: "Satellites of Jupiter"] 2002
May 16 (discovery)] [ [http://cfa-www.harvard.edu/mpec/K02/K02J54.html MPEC 2002-J54: "Eleven New Satellites of Jupiter"] 2002 May 15 (discovery and ephemeris)]

Thyone is about 4 kilometres in diameter, and orbits Jupiter at an average distance of 21,406 Mm in 639.803 days, at an inclination of 147° to the ecliptic (147° to Jupiter's equator) with an eccentricity of 0.2526.

It was named in August 2003 after Thyone, better known as Semele, one of Zeus' conquests in Greek mythology. [ [http://cfa-www.harvard.edu/iauc/08100/08177.html IAUC 8177: "Satellites of Jupiter, Saturn, Uranus"] 2003 August 8 (naming the moon)]

Thyone belongs to the Ananke group, retrograde irregular moons which orbit Jupiter between 19.3 and 22.7 Gm, at inclinations of roughly 150°.

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