2_20701.txt c_ck19n010.txt C/2019 N1 ATLAS C/2019 N1 CK19N010 C/2019 N1 (ATLAS) 2020 12 01.3898 1.705427 0.999062 193.4230 13.5732 82.4302 2023 02 28 7.5 2000.0 4.0