Ground Station Ephemeris Service

Ground Station Ephemeris Service is a space data service that publishes precise position and velocity data for mission planning for antenna, scheduling, and downlink operations. 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 Ground Station Ephemeris Service when the antenna handoff began, so the team could align navigation, communications, and safety analysis before the next mission decision point.”