../ dmsp_15_ephemeris_20120513.txt 22-Jun-2023 00:19 109590 dmsp_16_ephemeris_20120513.txt 22-Jun-2023 00:19 109529 dmsp_17_ephemeris_20120513.txt 22-Jun-2023 00:19 109619 dmsp_18_ephemeris_20120513.txt 22-Jun-2023 00:19 109547