2_20701.txt c_ck23s020.txt C/2023 S2 ATLAS C/2023 S2 CK23S020 C/2023 S2 (ATLAS) 2023 10 15.3776 1.067727 0.992916 78.1096 230.5616 20.4855 2023 11 28 15.0 2000.0 4.0