Atlas (moon)

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Atlas
Missing image
Atlas_Rev09.2x.jpg
Atlas, as imaged by Cassini on June 8, 2005

Discovery
Discovered by Terrile, Voyager 1
Discovered in October, 1980
Orbital characteristics
Mean radius 137,670 km [1] (http://sse.jpl.nasa.gov/planets/profile.cfm?Object=Sat_Atlas&Display=Facts)
Eccentricity 0.000
Orbital period 0.603 d
Inclination 0.007 (to Saturn's equator)
Satellite of Saturn
Physical characteristics
Mean diameter 18.5 × 17.2 × 13.5 km
Surface area km2
Mass 1016 kg
Mean density 0.63 g/cm3
Surface gravity m/s2
Escape velocity km/s
Rotation period synchronous
Axial tilt zero
Albedo
Surface temperature
min mean max
K K K
Atmospheric pressure 0 kPa

Atlas (at'-lus, Greek Άτλας) is a moon of Saturn.

Atlas was discovered by Richard Terrile in 1980 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 in Atlas' orbit.

High-resolution images taken in June 2005 reveal a saucer-shaped moon with a large equatorial ridge.

External links


... | S/2005 S 1 | Atlas | Prometheus | ...


Saturn's natural satellites
Janus' group | Mimas | Enceladus | Tethys | Dione | Rhea | Titan | Hyperion | Iapetus | Inuit group | Gallic group | Norse group
de:Atlas (Mond)

fr:Atlas (lune) nl:Atlas (maan) ja:アトラス (衛星) nn:Saturnmnen Atlas sk:Atlas (mesiac) zh:土卫十五

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