Launch success.
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Historical mission record
This page records Atlas V 551 | USSF-51 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: Atlas V USSF-51 ↗ · Launch Library ↗ · Flight Club ↗
The latest on this mission
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Mission status
Launch Successful
Status reported by the mission data provider.
LAUNCH SITECape Canaveral SFS, FL, USA
Mission
Classified payload for the US Space Force.
- Launch vehicle
- Atlas V 551
- Mission type
- Government/Top Secret
- Destination orbit
- Unknown
- Launch pad
- Space Launch Complex 41
- Provider
- United Launch Alliance
The vehicle
Published configuration and flight history.
Launch vehicle
Atlas V 551
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 standard payload fairing sizes are 4 or 5 meters in diameter and of various lengths. Fairings sizes as large as 7.2 m in diameter and up to 32.3 m in length have been considered. The rocket is assembled in Decatur, Alabama and Harlingen, Texas.
- Height
- 59.7 m
- Diameter
- 3.8 m
- Stages
- 2
- Recorded launches
- 19
- First flight
- 2006-01-19
Recorded timing
This is a mission record, not an upcoming calendar appointment.
5h windowPublished target
WINDOW OPENS
WINDOW CLOSES
Target ·
The target marker shows its position within the published window. The schedule may change before launch.
Weather concerns
Cumulus Cloud Rule , Anvil Cloud Rules
Flight timeline
Planned sequence, not live telemetry. Times are relative to the launch target.
- T−00:00:02
Ignition
- T+00:00:35
Supersonic
- T+00:00:47
Max-Q
- T+00:01:00
Liftoff
- T+00:01:45
Boosters Separation
- T+00:03:13
Fairing Separation
Launch site & orbit
Cape Canaveral SFS, FL, USA
The mission in perspective
Launch site
DestinationUnknown
Explore the launch pad on Earth using its published coordinates.
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Coverage & sources
Links supplied by the mission data provider.
Coverage and times may change.
Mission coverage
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