Launches / Atlas V 551

Past launch Launched successfully

ViaSat-3 F2 (ViaSat-3 EMEA)

Atlas V 551, flown by United Launch Alliance

Atlas V 551 lifting off with the ViaSat-3 F2 (ViaSat-3 EMEA) mission
Image via The Space Devs.

This was United Launch Alliance's 5th launch of 2025, and its 169th in all.

Counting every operator, it was the 268th orbital launch attempt anywhere in 2025, and the fifth from Space Launch Complex 41.

Launched
Friday, Nov. 14, 2025, 3:04 a.m. UTC
Window
Friday, Nov. 14, 2025, 3:04 to 3:48 a.m. UTC
Launch site
Cape Canaveral SFS, FL, USA
Rocket
Atlas V 551
Operator
United Launch Alliance
Weather
99% favorable

Watch the webcast →

The mission

The ViaSat-3 is a series of three Ka-band satellites is expected to provide vastly superior capabilities in terms of service speed and flexibility for a satellite platform. Each ViaSat-3 class satellite is expected to deliver more than 1-Terabit per second of network capacity, and to leverage high levels of flexibility to dynamically direct capacity to where customers are located.

Type
Communications
Destination
Geostationary transfer orbit

The 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.

Height
59.7 m
Built by
United Launch Alliance
First flew
January 19, 2006
Lifts to low Earth orbit
18,850 kg
View 5 specifications Show less
Lifts to geostationary transfer
8,890 kg
Diameter
3.8 m
Mass at liftoff
573 t
Thrust at liftoff
12,269 kN
Stages
1 to 2

23 flights, 23 of them successful.

Wikipedia →

The operator

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.

Sector
Commercial
Based in
USA
Founded
2006
Run by
John Elbon, Interim CEO

175 launches so far, 175 of them successful. The last 175 in a row went to plan.

ulalaunch.com → Wikipedia →

The launch site

It went up from Space Launch Complex 41 at Cape Canaveral SFS, FL, USA.

See the pad on a map →

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