Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future
2028 Nov. 21 70P2021 Nov. 3 70P2014 Oct. 20 70P2007 Oct. 5 70P2000 Sept.14 70P1994 Feb. 17 70P1986 Apr. 4 70P/1977 X11978 May 24 70P/1970 Y11970 Oct. 7