../ dmsp_15_ephemeris_20110909.txt 22-Jun-2023 00:18 109589 dmsp_16_ephemeris_20110909.txt 22-Jun-2023 00:18 109668 dmsp_17_ephemeris_20110909.txt 22-Jun-2023 00:18 109683 dmsp_18_ephemeris_20110909.txt 22-Jun-2023 00:18 109617