Extract text from Orbit ephemeris files (OEM)
To convert OEM Ephemeris files to another format, you need GMAT or other Data software.
To convert other file formats to the "Space Data & Setup Script" file type, you need software like GMAT or a similar tool.
The .OEM file extension primarily represents an Orbit Ephemeris Message file, defined by the Consultative Committee for Space Data Systems (CCSDS). These highly specialized text files store spacecraft orbital state vectors, epochs, and trajectory data over time. Alternatively, .OEM files function as Windows OEM Setup Files (such as txtsetup.oem), which contain text-mode scripts that Microsoft Windows uses during legacy OS installations to load third-party mass storage drivers.
For aerospace engineers using tools like the General Mission Analysis Tool (GMAT), raw .OEM files are strictly formatted ASCII text files. Their major disadvantage is that they are tedious to parse manually or integrate into modern web applications. Windows setup scripts, on the other hand, are severely outdated and prone to catastrophic syntax errors if modified incorrectly. Neither format is natively supported by standard office software or standard web browsers, making quick data review frustrating.
Users frequently need to convert .OEM orbital data into CSV or JSON formats for easier analysis, charting, or ingestion into Microsoft Excel or Python scripts. Converting these files is notoriously difficult because standard online converters fail to process their specialized syntax. Orbit Ephemeris Messages rely on strict keyword-value pairs (like EPOCH, X, Y, Z, VX, VY, VZ). Often, only the original orbital software or a custom-built parser can properly read or export the exact mathematical data without corruption.
Just drag and drop your file to see what it is and convert it if supported. Since .OEM files are typically plain text under the hood, convert.guru can still identify the file format, inspect the file, and show text or internal content. If our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your OEM file, detects the exact format, and lets you read the text inside.
Users also converted EOM, OEMBED, TXT, DOC, PRX, ETL, CONTACT and TLE files.
If you want to convert OEM file to TLE, INI, CFG, CONF, CONFIG, JSON, XML, YAML, YML, TOML, ENV or PROPERTIES, you can use GMAT or similar software from the "Spacecraft Trajectory & Setup Script" category. In the File menu, look for Save As… or Export….
To convert ZSHRC, CONF, RCFILE, GITCONFIG, RC, PLIST, BASHRC, CONFIG, PROFILE, INI, PREFS or CFG files to OEM, try GMAT or another comparable tool in the "Spacecraft Trajectory & Setup Script" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our OEM converter.