2_20701.txt c_ck20p030.txt C/2020 P3 ATLAS C/2020 P3 CK20P030 C/2020 P3 (ATLAS) 2021 04 21.1993 6.812421 1.001087 82.2680 19.4653 61.8896 2023 01 28 6.0 2000.0 4.0