171P/Spahr

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Updated on March 6, 2020

Returns and Appearances Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future 2025 Sept. 25 171P 2019 Jan. 13 171P 2012 Apr. 30 171P/2005 R3 2005 Sept. 3 171P/1998 W1 1999 Jan. 17