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Iapetus comparison table
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natural satellite satellite    Body orbiting a planet. Since 1957 the term has also been applied to man-made (artificial) satellites; many astronomers make the distinction by calling natural satellites moons (and the Earth's natural satellite the Moon). 
IapetusSaturn natural satellite850±100 kme = 0.028inclination 14°.7 to Saturn's orbital planeThe ninth satellite of Saturn. It has the most extreme variation in albedo of any satellite in the solar system (0.04 for the leading side, 0.28 for the trailing side). Discovered by Cassini in 1671.79d7h55m

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