2_20701.txt c_ck20y030.txt C/2020 Y3 ATLAS C/2020 Y3 CK20Y030 C/2020 Y3 (ATLAS) 2020 12 03.4621 1.999076 0.986607 342.0335 191.4321 83.1006 2021 10 18 13.5 2000.0 4.0