2_20701.txt c_ck19y010.txt C/2019 Y1 ATLAS C/2019 Y1 CK19Y010 C/2019 Y1 (ATLAS) 2020 03 15.5865 0.831433 0.990304 57.9673 31.5210 73.2703 2021 05 27 13.7 2000.0 4.0