Propulsion Ephemeris Service

Propulsion Ephemeris Service is a space data service that publishes precise position and velocity data for mission planning for thruster, burn, and maneuver systems. It uses orbit determination, time standards, and versioned trajectory products so teams can align navigation, communications, and safety analysis while keeping evidence, reliability, and public-safe operational boundaries clear.

“The mission team used Propulsion Ephemeris Service when the burn plan changed, so the team could align navigation, communications, and safety analysis before the next mission decision point.”