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The description of the word you requested from the astronomical dictionary is given below.
A moon of 7 km diameter at about 19,007,000 km from the planet Saturn. The gravity at its surface is about 0.0002 times as strong as on Earth. The moon goes once around its planet in about 978.9 days. The moon was discovered in 2003. Also called SXXXI (Saturn thirty-one). Its provisional designation was S/2003 S1.