Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future
49P2025 Apr. 10 49P2018 July 15 49P2011 Oct. 19 49P2005 Feb. 24 49P1998 July 12 49P1991 Oct. 2 49P1984 Dec. 1 49P1978 Feb. 2 49P1971 Apr. 6 49P1964 June 5 49P/1958 B11957 Sept. 6 49P/1951 C21950 Dec. 18