• Source: Hati (moon)

      • Hati or Saturn XLIII is a natural satellite of Saturn. Its discovery was announced by Scott S. Sheppard, David C. Jewitt, Jan Kleyna, and Brian G. Marsden on 4 May 2005, from observations taken between 12 December 2004 and 11 March 2005.
      Hati is about 5 kilometers in diameter, and orbits Saturn at an average distance of 19,697 Mm in 1040 days, at an inclination of 164° to the ecliptic, in a retrograde direction and with an eccentricity of 0.375, somewhat similar to Mundilfari's orbit. In March 2013, the synodic rotational period was measured by Cassini to about 5.45±0.04 hours. This is the fastest known rotation of all of Saturn's moons, and in fact the fastest known among all moons (including asteroid moons) for which a rotation period has been reliably measured. Like Mundilfari, it is very elongated in shape.
      It was named in April 2007 after Hati, a giant wolf from Norse mythology, son of Fenrisúlfr and twin brother of Sköll.


      References




      External links


      Scott Sheppard's Giant Planet Satellites Page (Saturn Satellite Data)
      Dave Jewitt: 12 new Satellites of Saturn May 3, 2005
      IAUC 8523: New Satellites of Saturn May 4, 2005 (discovery)
      MPEC 2005-J13: Twelve New Satellites of Saturn Archived 2012-05-29 at archive.today May 3, 2005 (discovery and ephemeris)
      IAUC 8826: Satellites of Jupiter and Saturn April 5, 2007 (naming the moon)

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