2_20701.txt c_ck19f020.txt C/2019 F2 ATLAS C/2019 F2 CK19F020 C/2019 F2 (ATLAS) 2019 09 08.8943 2.242586 0.865729 11.4817 175.5967 19.2190 2021 08 29 12.0 2000.0 4.0