Atlas V 551

Operated by United Launch Alliance, Atlas V 551 belongs to the Atlas family from United Launch Alliance.

Specifications

Height: 59.7 m
Diameter: 3.8 m
Mass: 573000 kg
Stages: 2
Thrust: 12269 kN
LEO payload: 18850 kg
First flight: Jan 19, 2006

Manufacturer & operator

Family: Atlas
Variant: 551
Manufacturer: United Launch Alliance
Operator: —
Country: United States of America

Launch sites

Cape Canaveral SFS, FL, USA (23 launches)

Launch history

23 launches to date.

SUCCESS

Atlas V 551

Atlas V 551 | Amazon Leo (LA-08)

Jul 2, 2026 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance

SUCCESS

Atlas V 551

Atlas V 551 | Amazon Leo (LA-07)

May 30, 2026 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance

SUCCESS

Atlas V 551

Atlas V 551 | Amazon Leo (LA-06)

Apr 28, 2026 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance

SUCCESS

Atlas V 551

Atlas V 551 | Amazon Leo (LA-05)

Apr 4, 2026 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance

SUCCESS

Atlas V 551

Atlas V 551 | Amazon Leo (LA-04)

Dec 16, 2025 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance

SUCCESS

Atlas V 551

Atlas V 551 | ViaSat-3 F2 (ViaSat-3 EMEA)

Nov 14, 2025 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance

SUCCESS

Atlas V 551

Atlas V 551 | Amazon Leo (KA-03)

Sep 25, 2025 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance

SUCCESS

Atlas V 551

Atlas V 551 | Amazon Leo (KA-02)

Jun 23, 2025 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance

SUCCESS

Atlas V 551

Atlas V 551 | Amazon Leo (KA-01)

Apr 29, 2025 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance

SUCCESS

Atlas V 551

Atlas V 551 | USSF-51

Jul 30, 2024 UTC

Cape Canaveral SFS, FL, USA

United Launch Alliance