Discovered Appeared Not observed Appeared before discovery Not observed before discovery Returns in the future
2027 Apr. 30 156P2020 Nov. 17 156P2014 Apr. 16 156P2007 June 17 156P/2000 QD1812000 Aug. 17 156P/1993 WU1993 Oct. 11 156P/1986 R11986 Dec. 4