Atlas V 551

Active

United Launch Alliance (ULA)

Jan. 19, 2006

Description

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.

Specifications
  • Minimum Stage
    1
  • Max Stage
    2
  • Length
    59.7 m
  • Diameter
    3.8 m
  • Fairing Diameter
    5.4 m
  • Launch Mass
    573 T
  • Thrust
    12269 kN
  • Apogee (Sub-Orbital)
    40000 km
Family
  • Name
    Atlas V 551
  • Family
  • Variant
    551
  • Alias
  • Full Name
    Atlas V 551
Payload Capacity
  • Launch Cost
    $153000000
  • Low Earth Orbit
    18850 kg
  • Geostationary Transfer Orbit
    8890 kg
  • Direct Geostationary
    3850 kg
  • Sun-Synchronous Capacity

United Launch Alliance

Commercial
CEO: Tory Bruno
ULA 2006

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.

Upcoming Spaceflights


Atlas V 551 | USSF-51

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD July, 2024
Status: To Be Determined
Mission:

Classified payload for the US Space Force.

Unknown
Explore Share

Atlas V 551 | ViaSat-3 EMEA

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD December, 2024
Status: To Be Determined
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.

Geostationary Transfer Orbit
Explore Share

Atlas V 551 | Project Kuiper (Atlas V #2)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD December, 2024
Status: To Be Determined
Mission:

Project Kuiper is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

Low Earth Orbit
Explore Share

Atlas V 551 | Project Kuiper (Atlas V #7)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD December, 2025
Status: To Be Determined
Mission:

Project Kuiper is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

Low Earth Orbit
Explore Share

Atlas V 551 | Project Kuiper (Atlas V #6)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD December, 2025
Status: To Be Determined
Mission:

Project Kuiper is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

Low Earth Orbit
Explore Share

Atlas V 551 | Project Kuiper (Atlas V #5)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD December, 2025
Status: To Be Determined
Mission:

Project Kuiper is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

Low Earth Orbit
Explore Share

Atlas V 551 | Project Kuiper (Atlas V #4)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD December, 2025
Status: To Be Determined
Mission:

Project Kuiper is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

Low Earth Orbit
Explore Share

Atlas V 551 | Project Kuiper (Atlas V #3)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD December, 2025
Status: To Be Determined
Mission:

Project Kuiper is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

Low Earth Orbit
Explore Share

Atlas V 551 | Project Kuiper (Atlas V #9)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD December, 2025
Status: To Be Determined
Mission:

Project Kuiper is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

Low Earth Orbit
Explore Share

Atlas V 551 | Project Kuiper (Atlas V #8)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
TBD December, 2025
Status: To Be Determined
Mission:

Project Kuiper is a mega constellation of satellites in Low Earth Orbit that will offer broadband internet access, this constellation will be managed by Kuiper Systems LLC, a subsidiary of Amazon. This constellation is planned to be composed of 3,276 satellites. The satellites are projected to be placed in 98 orbital planes in three orbital layers, one at 590 km, 610 km and 630 km altitude.

Low Earth Orbit
Explore Share

Atlas V 551 | NROL-107 (Silent Barker)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
Sept. 10, 2023, 12:47 p.m.
Status: Launch Successful
Mission:

Classified space situational awareness (SSA) payload for the US National Reconnaissance Office (NRO).

Geostationary Orbit #SILENTBARKER
Explore Share

Atlas V 551 | STP-3

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
Dec. 7, 2021, 10:19 a.m.
Status: Launch Successful
Mission:

Rideshare mission with the STPSat-6 satellite and six secondary payloads for the US Air Force. STPSat-6 carries the NNSA's Space and Atmospheric Burst Reporting System-3 (SABRS-3) payload and NASA's Laser Communications Relay Demonstration (LCRD) experiment.

Geostationary Orbit
Explore Share

Atlas V 551 | AEHF-6

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
March 26, 2020, 8:18 p.m.
Status: Launch Successful
Mission:

This is the sixth and final satellite in the Advanced Extremely High Frequency (AEHF) system, which is a series of communications satellites operated by the United States Air Force Space Command. It provides global, survivable, protected communications capabilities for strategic command and tactical warfighters operating on ground, sea and air platforms.

Geostationary Transfer Orbit #AEHF6
Explore Share

Atlas V 551 | AEHF-5 (USA 292)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
Aug. 8, 2019, 10:13 a.m.
Status: Launch Successful
Mission:

This is the fifth satellite in the Advanced Extremely High Frequency (AEHF) system, which is a series of communications satellites operated by the United States Air Force Space Command. It provides global, survivable, protected communications capabilities for strategic command and tactical warfighters operating on ground, sea and air platforms.

Geostationary Transfer Orbit #AEHF5
Explore Share

Atlas V 551 | AEHF-4 (USA 288)

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
Oct. 17, 2018, 4:15 a.m.
Status: Launch Successful
Mission:

This is the fourth satellite in the Advanced Extremely High Frequency (AEHF) system, which is a series of communications satellites operated by the United States Air Force Space Command. It provides global, survivable, protected communications capabilities for strategic command and tactical warfighters operating on ground, sea and air platforms.

Geostationary Transfer Orbit #AEHF4
Explore Share

Atlas V 551 | AFSPC-11

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
April 14, 2018, 11:13 p.m.
Status: Launch Successful
Mission:

Primary payload of the mission is the Continuous Broadcast Augmenting SATCOM (CBAS) satellite, which will be placed in geosynchronous orbit. It will continously relay data from from existing military communications satellites to support senior leaders and combatant commanders. This mission will also launch a number of secondary payloads hosted on the ESPA Augmented Geostationary Laboratory Experiment (EAGLE).

Geostationary Transfer Orbit #AFSPC11
Explore Share

Atlas V 551 | MUOS-5

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
June 24, 2016, 2:30 p.m.
Status: Launch Successful
Mission:

MUOS (Mobile User Objective System) is a next-generation narrowband tactical satellite communications system designed to significantly improve ground communications for U.S. forces on the move.

Geostationary Transfer Orbit
Explore Share

Atlas V 551 | MUOS-4

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
Sept. 2, 2015, 10:18 a.m.
Status: Launch Successful
Mission:

MUOS-4 is the fourth in a Lockheed Martin-built, five-ship fleet for a next-generation, narrowband tactical military satellite communications system.

Geostationary Transfer Orbit
Explore Share

Atlas V 551 | MUOS-3

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
Jan. 21, 2015, 1:04 a.m.
Status: Launch Successful
Mission:

A United Launch Alliance Atlas 5 rocket, designated AV-052, will launch the third Mobile User Objective System (MUOS) satellite for the U.S. Navy.a

Geostationary Transfer Orbit
Explore Share

Atlas V 551 | MUOS-2

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
July 19, 2013, 1 p.m.
Status: Launch Successful
Mission:

MUOS (Mobile User Objective System) is a next-generation narrowband tactical satellite communications system designed to significantly improve ground communications for U.S. forces on the move.

Geostationary Transfer Orbit
Explore Share

Atlas V 551 | MUOS-1

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
Feb. 24, 2012, 10:15 p.m.
Status: Launch Successful
Mission:

MUOS (Mobile User Objective System) is a next-generation narrowband tactical satellite communications system designed to significantly improve ground communications for U.S. forces on the move.

Geostationary Transfer Orbit
Explore Share

Atlas V 551 | Juno

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
Aug. 5, 2011, 4:25 p.m.
Status: Launch Successful
Mission:

Juno is a NASA space probe orbiting the planet Jupiter. It was built by Lockheed Martin and is operated by NASA's Jet Propulsion Laboratory. The spacecraft was launched from Cape Canaveral Air Force Station as part of the New Frontiers program. Juno's mission is to measure Jupiter's composition, gravitational field, magnetic field, and polar magnetosphere.

Jupiter Orbit
Explore Share

Atlas V 551 | New Horizons

United Launch Alliance | United States of America
Cape Canaveral, FL, USA
Jan. 19, 2006, 7 p.m.
Status: Launch Successful
Mission:

New Horizons is an interplanetary space probe that was launched as a part of NASA's New Frontiers program. Engineered by the Johns Hopkins University Applied Physics Laboratory (APL) and the Southwest Research Institute (SwRI), with a team led by S. Alan Stern, the spacecraft was launched in 2006 with the primary mission to perform a flyby study of the Pluto system in 2015, and a secondary mission to fly by and study one or more other Kuiper belt objects (KBOs) in the decade to follow. It is the fifth artificial object to achieve the escape velocity needed to leave the Solar System.

Solar Escape Trajectory
Explore Share

Falcon 9
Success
6 hours, 35 minutes ago
Starlink Group 8-9
Space Launch Complex 40 - Cape Canaveral, FL, USA

A batch of 20 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.


H3-22
Success
2 days, 12 hours ago
Advanced Land Observing Satellite-4 (ALOS-4)
Yoshinobu Launch Complex LP-2 - Tanegashima Space Center, Japan

The Advanced Land Observing Satellite-4 (ALOS-4) is a Japanese satellite designed to observe the Earth's surface using a phased array type L-band syn…


Long March 7A
Success
4 days, 3 hours ago
ChinaSat 3A
201 - Wenchang Space Launch Site, People's Republic of China

Chinese communication geostationary satellite for unknown purposes.


Falcon 9
Success
4 days, 12 hours ago
NROL-186
Space Launch Complex 4E - Vandenberg SFB, CA, USA

Second batch of satellites for a reconnaissance satellite constellation built by SpaceX and Northrop Grumman for the National Reconnaissance Office t…


Falcon 9
Success
6 days, 4 hours ago
Starlink Group 10-3
Space Launch Complex 40 - Cape Canaveral, FL, USA

A batch of 23 satellites for the Starlink mega-constellation - SpaceX's project for space-based Internet communication system.