- Additional Information
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Additional Information
Short Description Pan is the second-innermost moon of Saturn. It is a walnut-shaped small moon about 35 kilometres across and 23 km high that orbits within the Encke Gap in Saturn's A Ring. Pan acts as a ring shepherd and is responsible for keeping the Encke Gap free of ring particles. The eccentricity of Pan's orbit causes its distance from Saturn to vary by ~4 km. Its inclination, which would cause it to move up and down, is not distinguishable from zero with present data. The Encke Gap, within which Pan orbits, is about 325 km wide. Pan (moon) - Wikipedia, the free encyclopedia Discovered by Mark Robert Showalter Discovery date July 16, 1990 Type Moon AddInfo Saturn XVIII Satellite of Saturn Orbit Prograde Rotation Synchronous Apoapsis 06 133 586 km Periapsis 06 133 582 km Semi-major axis 06 133 584 km Distance from Sun 01 9.554 909 au /02 Eccentricity 0.000 014 4 Orbital period 0.575 050 718 day | 13.801 217 hour Orbital speed 16.89 km/s Inclination to the equator 0.000 1 Diameter/Size 28.4 ± 2.6 km Dimensions 34.4 × 31.4 × 20.8 km Mass 1015×4.95 kg Density 0.42 ± 0.15 g/cm3 Surface gravity 0.000 1 m/s2 Escape velocity 01 6 m/s Rotation period 0.575 050 718 day | 13.801 217 hour Axial tilt 0° Albedo geometric 0.5 Temperature mean 02 78 K | −195 °C Apparent magnitude 19.4 - Comments
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