Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future
74P2026 Mar. 8 74P2018 Jan. 26 74P2009 July 30 74P2001 Jan. 15 74P1992 Aug. 5 74P1984 Feb. 21 74P/1975 E21975 Aug. 6 74P/1967 EU1967 Feb. 7