Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future
60P2025 July 20 60P2018 Dec. 11 60P2012 May 13 60P2005 Dec. 24 60P1999 Mar. 8 60P1992 May 20 60P1985 July 21 60P1978 Sept.20 60P/1971 S11971 Nov. 29 60P/1965 A21965 Feb. 9