USSF-51
Atlas V 551
United Launch Alliance
Rocket Launch Video
Weather Forecast During Launch
According to weather officials, there's a 85% chance of favorable weather conditions at the time of the launch. Officials are monitoring weather conditions with concerns related to Cumulus Cloud Rule , Anvil Cloud Rules.
Trajectory
View comprehensive details including the rocket's trajectory, velocity, altitude, thrust, and more at FlightClub.io.
Rocket Launch Timeline
Enhance your rocket launch experience with a detailed timeline! From pre-launch preparations to post-launch milestones, a well-structured schedule ensures every step—payload prep, safety checks, and liftoff—runs smoothly. Stay informed and follow the action with precision.
| T- 00 : 00 : 02 | Ignition Start of the engine ignition sequence |
| T+ 00 : 00 : 35 | Supersonic Vehicle is supersonic |
| T+ 00 : 00 : 47 | Max-Q Maximum dynamic pressure |
| T+ 00 : 01 : 00 | Liftoff First upwards movement of the rocket |
| T+ 00 : 01 : 45 | Boosters Separation Separation of the side boosters |
| T+ 00 : 03 : 13 | Fairing Separation Separation of the payload fairing |
Mission
USSF-51
- Type: Government/Top Secret
- Orbit: Unknown
- Launch Cost: $153,000,000
Classified payload for the US Space Force.
Location
Space Launch Complex 41
Cape Canaveral SFS, FL, USA
Find the best place to watch the launch from Florida
Space Launch Complex 41 has witnessed the launch of 123 rockets, including 123 orbital launch attempts. While Cape Canaveral SFS, FL, USA, has been the site for 1106 rocket launches.
Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
Rocket
United Launch Alliance 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.
Agency
United Launch Alliance
United Launch Alliance (ULA) is a joint venture of Lockheed Martin Space Systems and Boeing Defense, Space & Security. ULA was formed in December 2006 by combining the teams at these companies which provide spacecraft launch services to the government of the United States. ULA launches from both coasts of the US. They launch their Atlas V vehicle from LC-41 in Cape Canaveral and LC-3E at Vandeberg. Their Delta IV launches from LC-37 at Cape Canaveral and LC-6 at Vandenberg.
Frequently Asked Questions
When was the United Launch Alliance Atlas V 551 USSF-51 launch scheduled?
The United Launch Alliance Atlas V 551 USSF-51 launch was scheduled for:
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Where can I watch the United Launch Alliance Atlas V 551 USSF-51 launch video?
You can watch the United Launch Alliance Atlas V 551 launch video on this page. The official video includes full mission coverage with multiple camera angles, onboard views, and expert commentary covering pre-launch procedures, liftoff, stage separation, and payload deployment.
Where did the United Launch Alliance Atlas V 551 USSF-51 mission launch from?
The United Launch Alliance Atlas V 551 rocket launched from Space Launch Complex 41 at Cape Canaveral SFS, FL, USA. Cape Canaveral Space Force Station (CCSFS) is an installation of the United States Space Force's Space Launch Delta 45, located on Cape Canaveral in Brevard County, Florida.
What rocket was used for the USSF-51 mission?
The USSF-51 mission launched aboard a United Launch Alliance Atlas V 551 rocket. 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. Detailed rocket specifications and performance data are available in the rocket details above.
What weather conditions could have delayed the United Launch Alliance Atlas V 551 USSF-51 launch?
The United Launch Alliance Atlas V 551 USSF-51 launch could have been delayed by various weather conditions including lightning within 10 nautical miles, high winds (especially upper-level winds), thick cloud layers, precipitation, and poor visibility. Weather must be favorable at the launch site, downrange landing zones, and abort landing sites.
How can I get updates if the United Launch Alliance Atlas V 551 USSF-51 launch was delayed?
This page was updated in real-time with the latest United Launch Alliance Atlas V 551 launch status, including any delays or scrubs for the USSF-51 mission. You can also check our space launch schedule for historical launch information. Our mobile app provides push notifications for instant alerts about launch status changes. Official United Launch Alliance live streams provided the most immediate range updates during the launch window.