http://www.c3.lanl.gov/~cjhamil/SolarSystem/atlas.html (Einblicke ins Internet, 10/1995)Saturn XV - 1980S28
Atlas, the second of Saturn's known satellites, orbits near the outer edge of the A-ring and is about 40 by 20 kilometers (25 by 15 miles) in size. It is probably a shepherd satellite for Saturn's A-ring. Atlas was discovered by R. Terrile in 1980 found from photographs taken by Voyager during its encounter with Saturn.
Discovered by .................................... R. Terrile Date of discovery ...................................... 1980 Mass (kg) ................................................. ? Radius (km) ........................................... 20x15 Radius (Earth = 1) ............................... 3.1358e-03 Mean density (gm/cm^3) .................................... ? Mean distance from Saturn (km) ...................... 137,640 Rotational period (days) .................................. ? Orbital period (days) ................................ 0.6019 Mean orbital velocity (km/sec) ........................ 16.63 Orbital eccentricity .................................. 0.000 Orbital inclination ..................................... 0.0° Visual geometric albedo ................................. 0.9 Magnitude (Vo) ......................................... 18.0
Atlas
(GIF, 4K)
This image of Atlas was acquired by the Voyager 1 spacecraft on
November 12, 1980.
(Credit: Calvin J. Hamilton, Los Alamos National Laboratory)
