Martian Ephemeris Service

Martian Ephemeris Service is a space data service that publishes precise position and velocity data for mission planning for Mars relay, rover, and entry 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 Martian Ephemeris Service when the rover started a high-latency science pass, so the team could align navigation, communications, and safety analysis before the next mission decision point.”