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Trajectory Two-Line Element Format (TLE)

The two-line element, or TLE trajectory format has been supported by GSG since 2016. Two-line elements sets are used as a coordinate system, as utilized by State Vector descriptions of e.g., satellite positions and velocities.

While there is no editor for TLE-based trajectories in StudioView, you can select a TLE trajectory in a scenario, once you created it in a text editor.

The file extension must be .tle, and the file must contain 3 lines:

  • First line: Header <the satellite text name>
  • Second line: <data>
  • Third line: <data>

The format is standardized and follows the definition outlined here:

http://spaceflight.nasa.gov/realdata/sightings/SSapplications/Post/JavaSSOP/SSOP_Help/tle_def.html