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Saturn is named after the Roman god of wealth and agriculture, who was the father of the god Jupiter.Its astronomical symbol has been traced back to the Greek Oxyrhynchus Papyri, where it can be seen to be a Greek kappa-rho ligature with a horizontal stroke, as an abbreviation for Κρονος (), the Greek name for the planet (). [35]
Tethys (/ ˈ t iː θ ɪ s, ˈ t ɛ θ ɪ s /), or Saturn III, is the fifth-largest moon of Saturn, measuring about 1,060 km (660 mi) across. It was discovered by Giovanni Domenico Cassini in 1684, and is named after the titan Tethys of Greek mythology .
Mimas, also designated Saturn I, is the seventh-largest natural satellite of Saturn.With a mean diameter of 396.4 kilometres or 246.3 miles, Mimas is the smallest astronomical body known to be roughly rounded in shape due to its own gravity.
Methone / m ɛ ˈ θ oʊ n iː / is a small, egg-shaped natural satellite of Saturn that orbits out past Saturn's ring system, between the orbits of Mimas and Enceladus.It was discovered in 2004, though it was not until 2012 that it was imaged in detail by the Cassini spacecraft.
It is Saturn's ninth-largest moon, but it is the eighth-most massive. Hyperion, another one of Saturn's moons, has a larger radius, but is less massive than Phoebe. Phoebe rotates every nine hours and 16 minutes, and completes a full orbit around Saturn in about 18 months. Its surface temperature is on average 75 K (−198.2 °C).
Download as PDF; Printable version; ... Physical characteristics of Saturn Structure of Saturn; ... Text is available under the Creative Commons Attribution ...
Hyperion / h aɪ ˈ p ɪər i ə n /, also known as Saturn VII, is the eighth-largest moon of Saturn. It is distinguished by its highly irregular shape, chaotic rotation, low density , and its unusual sponge-like appearance.
Titan (larger crescent) and Rhea (smaller crescent), two regular moons of Saturn. In astronomy, a regular moon or a regular satellite is a natural satellite following a relatively close, stable, and circular orbit which is generally aligned to its primary's equator.