Enceladus - Enceladus (moon) Enceladus Degraded craters,...

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Enceladus (moon) Enceladus Degraded craters, fractures and disrupted terrain in Cassini mosaic of Enceladus's north polar region. The two prominent craters above the middle terminator are Ali Baba (upper) and Aladdin . The Samarkand Sulci grooves run vertically to their left. Discovery Discovered by William Herschel Discovery date August 28, 1789 [1] Designations Pronunciation / n s l d s/ ɛ ˈ ɛ ə ə [2] Alternate name(s) Saturn II Adjective Enceladean, Enceladan [3] Orbital characteristics Semi-major axis 237,948 km Eccentricity 0.004 7 [4] Orbital period 1.370 218 days or 118,386.82 seconds [5] Inclination 0.019° (to Saturn's equator) Satellite of Saturn Proper orbital elements Physical characteristics Dimensions 513.2×502.8×496.6 km [6] Mean radius 252.1 ± 0.2 km [6] (0.0395 Earths) Mass (1.080 22 ± 0.001 01)×10 20 kg [7] (1.8×10 −5 Earths) Mean density 1.609 ± 0.005 g /cm 3 [6] Equatorial surface gravity 0.114 m/s 2 (0.011 3 g )
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Escape velocity 0.239 km/s (860.4 km/h)
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Enceladus - Enceladus (moon) Enceladus Degraded craters,...

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