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United Launch Alliance
Atlas V 421 | SBIRS GEO-6
Recorded mission coverage
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Mission brief
The flight at a glance.
Sixth geosynchronous satellite of the Space Based Infrared System program (SBIRS), providing capabilities for early missile warning and missile defense. SBIRS GEO-6 is the second satellite using Lockheed Martin's LM2100 combat bus.
Open the full mission →Published flight sequence
Know what comes next.
Planned timings relative to the target. These steps do not indicate live progress.
A flight sequence has not been published for this mission.