2_20200.txt  c_ck17s070.txt  C/2017 S7       Lemmon                                                                                               C/2017 S7       CK17S070     C/2017 S7 (Lemmon)                        2017 05 26.3777 7.610691   1.001648 187.6530   262.7946   124.2339   2019 12 08      7.0   2000.0 4.0