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Launch SuccessfulUnited States Air Force

Delta II: Iridium 55 to 60

Iridium provides global mobile telecommunications services using a constellation of 66 low earth orbit satellites in a 86.4° inclined orbit. Although 77 satellites were originally envisioned for the system and spawned the name based on the 77th element in the periodic table, the system has been scaled back. Motorola's Satellite Communications Group designed and manufactured the Iridium satellites with Lockheed Martin providing the LM-700A spacecraft buses.

Monday, 30 March 1998
Delta II: Iridium 55 to 60

Mission Data

United States Air Force
🇺🇸United States Air ForceEst. 1947
Launch VehicleDelta II 7920-10C
Vehicle FamilyDelta
Vehicle Record17 of 17 launches (100%)
Provider TypeGovernment
Agency Record972 successes / 106 failures (90%)
Success Streak68 consecutive
ProgramIridium Constellation · Communication Constellation
Mission TypeCommunications
Target OrbitLow Earth Orbit
Launch PadSpace Launch Complex 2W
Location🇺🇸 Vandenberg SFB, CA, USA USA
Orbital Launches This Year#20
Agency Launches This Year#4
Launches From This Pad99
Launches From This Site923
Status Note

The launch vehicle successfully inserted its payload(s) into the target orbit(s).

About Delta II 7920-10C

Delta II is an American space launch system developed by McDonnell Douglas, now part of the Delta rocket family operated by United Launch Alliance. With more than 150 missions and a nearly perfect track record, Delta II has established itself as one of the most successful orbital launch systems.

Launch Site

Space Launch Complex 2W · 34.7556°N 120.6224°W

Launch data from Launch Library 2 by The Space Devs.