2_20200.txt c_ck17o010.txt C/2017 O1 ASASSN1 C/2017 O1 CK17O010 C/2017 O1 (ASASSN) 2017 10 15.8971 1.490775 0.996056 20.8424 25.7156 39.9862 2022 08 27 11.0 2000.0 4.0