2_20701.txt c_ck19j010.txt C/2019 J1 Lemmon C/2019 J1 CK19J010 C/2019 J1 (Lemmon) 2019 04 08.0043 2.484653 0.963808 167.7550 98.1493 24.5423 2023 01 28 12.0 2000.0 4.0