Ceres Beacon Navigation Network

Ceres handles more tonnage than any port beyond Mars, and Ceres Beacon keeps it safe. Four small satellites hold synchronous stations 720 km above the dwarf planet, broadcasting ranging signals that let arriving ships fix their position to within 40 centimetres. Approach corridors for Leviathan Ore Haulers and Atlas Heavy Freighters are defined against the beacon grid.

A Leviathan carrying 140,000 tonnes of refined metal cannot stop quickly, so precise approach guidance is not a luxury. Since the network went live in 2183, near-miss reports in the Ceres approach zone have fallen by 71 per cent, according to the port authority's own figures.

Ephemerides, clock corrections and an anonymised traffic density map are published under the Open Data Commons ODbL licence. Belt mining cooperatives use the density maps to schedule departures outside peak windows and save fuel loitering in parking orbits.

Freya MacAllister coordinates partner access from the Ceres office. Developers can contribute receiver implementations, and the repository hosts reference code for decoding the beacon message format. The full set of outputs (navigation beacon ephemerides, traffic density maps and clock corrections) is licensed Open Data Commons ODbL, with source and documentation at https://git.halcyon.example/ceres-beacon. Halcyon commits to keeping it available for at least twenty years, with older versions preserved in the open data archive. Feedback from partners shapes the roadmap; most new features over the past two years began as a request on the public tracker.