../ dmsp_15_ephemeris_20111104.txt 22-Jun-2023 00:18 109508 dmsp_16_ephemeris_20111104.txt 22-Jun-2023 00:18 109447 dmsp_17_ephemeris_20111104.txt 22-Jun-2023 00:18 109547 dmsp_18_ephemeris_20111104.txt 22-Jun-2023 00:18 109415