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physical object > natural object > celestial body > natural satellite > Tethys

Tethys comparison table

Subject	is part of	is a kind of	is an instance of	has orbital period	has diameter	has discovery date	has definition	has discoverer
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).
Tethys	Saturn		natural satellite	P = 1.87 days	1000 km	1684	Fourth satellite of Saturn	Cassini

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