2_20200.txt c_ck17k060.txt C/2017 K6 Jacques C/2017 K6 CK17K060 C/2017 K6 (Jacques) 2018 01 03.1638 2.000705 0.998120 303.7861 85.0554 57.2558 2019 12 08 11.0 2000.0 4.0