Launch success
Update ↗
SBIRS GEO-6
Atlas V 421
Historical mission record
This page records Atlas V 421 | SBIRS GEO-6 and its reported outcome: Launch Successful. The date above is a historical record.
Source record updated . This is a source update, not a confirmed launch time.
Check the source: Launch Library ↗ · Flight Club ↗
What changed?
Status reported by the mission data provider.
Mission
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.
- Launch vehicle
- Atlas V 421
- Mission type
- Government/Top Secret
- Destination orbit
- Geostationary Transfer Orbit
- Launch pad
- Space Launch Complex 41
- Provider
- United Launch Alliance
The vehicle
Published configuration and flight history.

Atlas V 421
Atlas V is an expendable launch system in the Atlas rocket family. It was formerly operated by Lockheed Martin and is now operated by United Launch Alliance (ULA), a joint venture with Boeing. Each Atlas V rocket uses a Russian-built RD-180 engine burning kerosene and liquid oxygen to power its first stage and an American-built RL10 engine burning liquid hydrogen and liquid oxygen to power its Centaur upper stage. The RD-180 engines are provided by RD Amross, while Aerojet Rocketdyne provides both the RL10 engines and the strap-on boosters used in some configurations. The 421 version uses a 4m wide fairing, 2 solid rocket boosters and one engine on the Centaur stage.
- Height
- 58.3 m
- Diameter
- 3.8 m
- Stages
- 2
- Recorded launches
- 9
- First flight
- 2007-10-11
Recorded timing
This is a mission record, not an upcoming calendar appointment.
Target ·
The target marker shows its position within the published window. The schedule may change before launch.
Launch site & orbit
Cape Canaveral SFS, FL, USA
Launch site & orbit
Explore the launch pad, then pull back to see the shape of the destination orbit.
Understand this orbit
Coverage & sources
Links supplied by the mission data provider.
Coverage and times may change.
Mission coverage
August 4 Live Broadcast: Atlas V SBIRS GEO 6 ↗Explore on iPhone
Browse mission details and discover upcoming launches in Spacian.
Open mission in Spacian ↗