Atlas (moon)
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| Image:Atlas Rev09.2x.jpg | |||||||
| Discovery | |||||||
|---|---|---|---|---|---|---|---|
| Discovered by | Terrile, Voyager 1 | ||||||
| Discovered in | October, 1980 | ||||||
| Orbital characteristics | |||||||
| Mean radius | 137,670 km [1] | ||||||
| Eccentricity | 0.000 | ||||||
| Orbital period | 0.603 d | ||||||
| Inclination | 0.007° (to Saturn's equator) | ||||||
| Satellite of | Saturn | ||||||
| Physical characteristics | |||||||
| Mean diameter | 31 km (46 × 38 × 19 km) | ||||||
| Surface area | ~13,500 km2 | ||||||
| Volume | ~18,000 km3 | ||||||
| Mass | 1.1Template:E kg | ||||||
| Mean density | 0.63 g/cm3 | ||||||
| Surface gravity | ~0.0026 m/s2 | ||||||
| Escape velocity | ~0.0095 km/s | ||||||
| Rotation period | synchronous | ||||||
| Axial tilt | zero | ||||||
| Albedo | 0.4 | ||||||
| Surface temperature |
| ||||||
| Atmospheric pressure | 0 kPa | ||||||
Atlas (at'-ləs, IPA Template:IPA, Greek Άτλας) is a moon of Saturn.
Atlas was discovered by Richard Terrile in 1980 (some time before November 12) from Voyager photos and was designated 1980 S 28. In 1983 it was officially named after Atlas of Greek mythology, because it "holds the rings on its shoulders" like the Titan Atlas held the sky up above the Earth. It is also designated as Saturn XV.
Atlas seems to be a shepherd satellite of the A ring. Furthermore, in 2004 a faint, thin ring, temporarily designated R/2004 S 1, was discovered within Atlas's orbit.
High-resolution images taken in June 2005 by Cassini reveal a saucer-shaped moon with a large equatorial ridge.
External links
Template:Saturn Full Footerals:Atlas (Mond) bg:Атлас (спътник) ca:Atles (satèl·lit) da:Atlas (måne) de:Atlas (Mond) es:Atlas (luna) fr:Atlas (lune) hr:Atlas (mjesec) nl:Atlas (maan) ja:アトラス (衛星) nn:Saturnmånen Atlas pl:Atlas (księżyc) pt:Atlas (satélite) ru:Атлас (спутник) sk:Atlas (mesiac) sv:Atlas (måne) uk:Атлас (супутник) zh:土卫十五