2_20701.txt c_ck18y010.txt C/2018 Y1 Iwamoto C/2018 Y1 CK18Y010 C/2018 Y1 (Iwamoto) 2019 02 05.6990 1.284128 0.990100 357.9048 147.4745 160.4152 2023 05 01 9.0 2000.0 4.0