Epimetheus
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views updated May 08 2018Epimetheus (Saturn XI) One of the lesser satellites of
Saturn, discovered in 1979 by
Pioneer II, with a radius measuring 69 × 55 × 55 km; mass 0.0055 × 10
20 kg; mean density 630 kg/m
3; visual albedo 0.8.
A Dictionary of Earth Sciences AILSA ALLABY and MICHAEL ALLABY