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Albiorix ( ) is a prograde irregular satellite of Saturn. It was discovered by Holman and colleagues in 2000, and given the temporary designation S/2000 S 11.〔(IAUC 7545: ''S/2000 S 11'' ) 19 December 2000 (discovery)〕〔(MPEC 2000-Y13: ''S/2000 S 11'' ) 19 December 2000 (discovery and ephemeris)〕〔Gladman, B. J.; Nicholson, P. D.; Burns, J. A.; Kavelaars, J. J.; Marsden, B. G.; Holman, M. J.; Grav, T.; Hergenrother, C. W.; Petit, J.-M.; Jacobson, R. A.; and Gray, W. J.; (''Discovery of 12 satellites of Saturn exhibiting orbital clustering'' ), Nature, 412 (July 12, 2001), pp. 163–166〕 Albiorix is the largest member of the Gallic group of irregular satellites. It was named in August 2003〔(IAUC 8177: ''Satellites of Jupiter, Saturn, Uranus'' ) August 8, 2003 (naming the moon)〕 for Albiorix, "a Gallic giant who was considered to be the king of the world." The name is known from an inscription found near the French town of Sablet which identifies him with the Roman god Mars (an ''interpretatio romana'').〔Maier, Bernhard, ''Dictionary of Celtic religion and culture'' (1997), p. 11.〕 Albiorix orbits Saturn at a distance of about 16 million km and its diameter is estimated at 32 kilometers, assuming an albedo of 0.04. The rotation period was measured by the (ISS camera ) of the Cassini spacecraft to 13 hours and 19 minutes.〔 The diagram illustrates the Albiorigian orbit in relation to other prograde irregular satellites of Saturn. The eccentricity of the orbits is represented by the yellow segments extending from the pericentre to the apocentre. Given the similarity of the orbital elements and the homogeneity of the physical characteristics with other members of the Gallic group, it was suggested that these satellites could have a common origin in the break-up of a larger moon.〔〔 Varying colours revealed recently suggest a possibility of a large crater, leading to an alternative hypothesis that Erriapus and Tarvos could be fragments of Albiorix following a near-break-up collision with another body.〔Grav, T.; and Bauer, J.; (''A deeper look at the colors of Saturnian irregular satellites'' )〕 ==References== *Ephemeris (from IAU-MPC NSES ) 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Albiorix (moon)」の詳細全文を読む スポンサード リンク
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