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O3B PFM

Medium Earth Orbit Broadband (Proto-Flight Model) · SES

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The Proto-Flight Model of SES's O3B constellation — the very first satellite of the system to fly, testing the medium-Earth-orbit broadband architecture before the rest of the fleet followed. O3B PFM proved out the concept that has since expanded into the far more powerful O3B mPower generation, positioning SES as a genuine alternative to Starlink for enterprise and government broadband customers.

Its orbit

Orbit
Medium Earth Orbita high vantage point, ideal for navigation
Altitude
5,014–5,023 mi (8,069–8,083 km)
Inclination
0.1°
One orbit
4.8 hours5.0 orbits a day
NORAD ID
39191
Int’l designator
2013-031D
Launched
2013

Orbital elements from CelesTrak, as of 22 Sep 2026.

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