GALILEO-FM3
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About This Satellite
Galileo FM3, launched in October 2012, completed the first four-satellite Galileo test quartet, enabling the very first positioning fixes using only European navigation signals.
GALILEO-FM3 is a cataloged satellite tracked under NORAD ID 38857 with international designator 12055A. According to the GCAT master catalog, it was built by EADSB/THALR, on the GalileoSat platform, with a launch mass of about 700 kg, with a shape described as Box + 2 Pan. According to the TLE snapshot used when this page was generated (2026-08-18), its MEO orbit had an apogee of about 23.237 km and a perigee near 23.222 km, with an inclination of 55.84° and a period of roughly 844.7 minutes; at apogee its speed was about 3.67 km/s. Positions on this page are near-real-time SGP4 predictions propagated from the latest two-line element (TLE) data.
In the TLE snapshot used to generate this page, GALILEO-FM3's apogee was 23.237 km, where its speed was about 3.67 km/s, completing about 1.7 orbits of Earth per day. Track it live on the map above or in the JOT orbital map.