../ dmsp_15_ephemeris_20110513.txt 22-Jun-2023 00:17 109633 dmsp_16_ephemeris_20110513.txt 22-Jun-2023 00:17 109499 dmsp_17_ephemeris_20110513.txt 22-Jun-2023 00:17 109647 dmsp_18_ephemeris_20110513.txt 22-Jun-2023 00:17 109670