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Greip (moon) : ウィキペディア英語版 | Greip (moon) Greip , or Saturn LI (provisional designation S/2006 S 4), is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on 26 June 2006, from observations taken between 5 January and 1 May 2006. Greip is about 6 kilometres in diameter, and orbits Saturn at an average distance of 18,066 Mm in 906.556 days, at an inclination of 172.7° to the ecliptic (159.2° to Saturn's equator), in a retrograde direction and with an eccentricity of 0.3735. It is named after Greip, a giantess in Norse mythology. ==References==
* (Institute for Astronomy Saturn Satellite Data ) * (IAUC 8727: ''Satellites of Saturn'' ) June 30, 2006 (discovery) * (MPEC 2006-M45: ''Eight New Satellites of Saturn'' ) June 26, 2006 (discovery and ephemeris) * (IAUC 8873: ''Satellites of Saturn'' ) September 20, 2007 (naming)
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