../ dmsp_15_ephemeris_20110902.txt 22-Jun-2023 00:18 109630 dmsp_16_ephemeris_20110902.txt 22-Jun-2023 00:18 109608 dmsp_17_ephemeris_20110902.txt 22-Jun-2023 00:18 109750 dmsp_18_ephemeris_20110902.txt 22-Jun-2023 00:18 109644