Greip (moon)

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Greip (/ˈɡrp/ grayp), 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.


  • Institute for Astronomy Saturn Satellite Data
  • IAUC 8727: Satellites of Saturn[permanent dead link] June 30, 2006 (discovery)
  • MPEC 2006-M45: Eight New Satellites of Saturn June 26, 2006 (discovery and ephemeris)
  • IAUC 8873: Satellites of Saturn[permanent dead link] September 20, 2007 (naming)
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