2_20701.txt c_ck18x020.txt C/2018 X2 Fitzsimmons C/2018 X2 CK18X020 C/2018 X2 (Fitzsimmons) 2019 07 08.3568 2.126393 0.985432 162.0461 340.8292 23.0694 2021 05 27 12.0 2000.0 4.0