2_20701.txt c_ck18a060.txt C/2018 A6 Gibbs C/2018 A6 CK18A060 C/2018 A6 (Gibbs) 2019 07 10.8053 3.018717 0.799040 264.3263 340.3993 77.0873 2023 11 28 9.0 2000.0 4.0