Head to head

Atlas V 551 vs Long March 2F/G

Two vehicles in the same payload class. Every figure below comes from the same two sources for both rockets, and a row appears only when both publish the input.

Payload to low Earth orbit

Relative

Atlas V 551: 18,850 kg

Long March 2F/G: 8,399 kg

Side by side

7 comparable figures

The highlighted value wins the row. Rows where neither direction is better, like length or stage count, highlight nothing.

Metric	Atlas V 551	Long March 2F/G
Flights flown	23	22
Success rate	100%	100%
Payload to LEO (kg)	18,850	8,399
Length (m)	59.7	62
Diameter (m)	3.8	3.35
Launch mass (t)	573	464
Stages	2	2

Atlas V 551

Flight record

100% success rate23 of 23 flown

2006peak 2025 · 5 flights2026

Maiden flight 2006-01-19. Retired.

Long March 2F/G

Flight record

100% success rate22 of 22 flown

2011peak 2022 · 3 flights2026

Maiden flight 2011-10-31. Still flying.

Atlas V 551 is built by United Launch Alliance of the United States (company profile on Space Index).Long March 2F/G is built by China Aerospace Science and Technology Corporation of China.

Full specifications and the complete launch history for each: Atlas V 551 · Long March 2F/G.

Specifications from Launch Library 2 by The Space Devs, launch records from Space Index. Derived figures are computed here; see sources and method.