- Additional Information
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Additional Information
Short Description Prometheus is an inner satellite of Saturn. It was discovered in 1980 (some time before October 25) from photos taken by the Voyager 1 probe, and was provisionally designated S/1980 S 27. In late 1985 it was officially named after Prometheus, a Titan in Greek mythology. Prometheus acts as a shepherd satellite for the inner edge of Saturn's narrow F Ring. Prometheus (moon) - Wikipedia, the free encyclopedia Discovered by Collins, Voyager 1 Discovery date October, 1980 Type Moon AddInfo Saturn XVI Satellite of Saturn Orbit Prograde Rotation Synchronous Apoapsis 06 139 686 km Periapsis 06 139 073 km Semi-major axis 06 139 380 km Distance from Sun 01 9.554 909 au /05 Eccentricity 0.002 2 Orbital period 0.612 990 038 day Orbital speed 02 16.54 km/s Inclination to the equator 000.008° Diameter/Size 86.2 ± 4.0 km Dimensions 135.6 × 79.4 × 59.4 km Mass 1017×1.595 kg Density 0.48 ± 0.09 g/cm3 Surface gravity 0.001 3 – 0.005 8 m/s2 Escape velocity 02 19 m/s Rotation period 0.612 990 038 day Axial tilt 0° Albedo geometric 0.6 Temperature mean 02 74 K | −199 °C Apparent magnitude 15.5 - Comments
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