This folder contains EPM2017 ephemeris developed at the Institute of Applied Astronomy RAS. The subfolders have the same ephemeris provided in different file formats: BIN : IAA Binary files DE : Binary (.bin) and text (.txt, .17) files in JPL DE format, and also .7z archive file for faster downloading SPICE : SPICE files (preferred format) TXT : IAA Text files The description of EPM2017 can be found at the IAA RAS website: http://iaaras.ru/en/dept/ephemeris/epm/2017 On how to access the ephemeris files, please read the user manual: http://iaaras.ru/en/dept/ephemeris/epm/manual