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Loading content66 operational satellites plus on-orbit spares
The second-generation Iridium constellation of 66 cross-linked low-Earth-orbit satellites providing pole-to-pole voice and data coverage.
Individual members of large, fast-changing constellations are not enumerated here — their rosters change continually, and this encyclopedia does not invent a fixed list. The constellation is modelled as a single entity connected to its operator and orbit.
Facts on this topic will be cited from these primary and reference sources.
A specialist reference compilation of launch vehicles, stages, and spacecraft across all spacefaring nations.