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: ''There is also an asteroid called 53 Kalypso.'' | adjectives = Calypsonian }} __NOTOC__ Calypso ( ; (ギリシア語:Καλυψώ)) is a moon of Saturn. It was discovered in 1980, from ground-based observations, by Dan Pascu, P. Kenneth Seidelmann, William A. Baum, and Douglas G. Currie, and was provisionally designated (the 25th satellite of Saturn discovered in 1980). Several other apparitions of it were recorded in the following months: , , , and . In 1983 it was officially named after Calypso of Greek mythology. It is also designated as or Tethys C. Calypso is co-orbital with the moon Tethys, and resides in Tethys' trailing Lagrangian point (), 60 degrees behind Tethys. This relationship was first identified by in 1981. The moon Telesto resides in the other (leading) Lagrangian point of Tethys, 60 degrees in the other direction from Tethys. Calypso and Telesto have been termed "Tethys trojans", by analogy to the trojan asteroids, and are half of the four presently known trojan moons. Like many other small Saturnian moons and small asteroids, Calypso is irregularly shaped, has overlapping large craters, and appears to also have loose surface material capable of smoothing the craters' appearance. Its surface is one of the most reflective (at visual wavelengths) in the Solar System, with a visual geometric albedo of 1.34. This very high albedo is the result of the sandblasting of particles from Saturn's E-ring, a faint ring composed of small, water-ice particles generated by Enceladus' south polar geysers. == Gallery == File:Calypso crop resize sharp.jpg|Another February 13, 2010 image showing flow-like albedo features File:Calypso image PIA07633.jpg|''Cassini'' image from September 23, 2005 File:Calypso - Voyager 2.jpg|Calypso as seen by Voyager 2 (August 1981) 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「Calypso (moon)」の詳細全文を読む スポンサード リンク
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