head to head
Atlas V 551 vs Delta IV Heavy
Verdict
- Taller
- Delta IV Heavy
- 59.7 m vs 72 m
- More to LEO
- Delta IV Heavy
- 18,850 kg vs 28,370 kg
- Flown more
- Atlas V 551
- 23 vs 16
- Flew first
- Delta IV Heavy
- 2006-01-19 vs 2004-12-21
Atlas V 551
- Country / maker
- United Launch Alliance
- Height
- 59.7 m
- Diameter
- 3.8 m
- Launch mass
- 573 t
- LEO capacity
- 18,850 kg
- GTO capacity
- 8,890 kg
- Stages
- 2
- Maiden flight
- 2006-01-19
Delta IV Heavy
- Country / maker
- United Launch Alliance
- Height
- 72 m
- Diameter
- 5 m
- Launch mass
- 733 t
- LEO capacity
- 28,370 kg
- GTO capacity
- 14,210 kg
- Stages
- 2
- Maiden flight
- 2004-12-21
Every number
| Field | Atlas V 551 | Delta IV Heavy |
|---|---|---|
| Country / maker | United Launch Alliance | United Launch Alliance |
| Height | 59.7 m | 72 m |
| Diameter | 3.8 m | 5 m |
| Launch mass | 573 t | 733 t |
| LEO capacity | 18,850 kg | 28,370 kg |
| GTO capacity | 8,890 kg | 14,210 kg |
| Stages | 2 | 2 |
| Maiden flight | 2006-01-19 | 2004-12-21 |
| Launches | 23 | 16 |
| Success rate | 100.0% | 93.8% |
| Reusable | no | no |
| Status | retired | retired |