Compare rockets
Pick up to 4 vehicles to compare specs and flight records side by side. Browse all →
| Specification | Athena II Lockheed Martin × remove | Tsiklon-2 Yuzhnoye Design Bureau × remove | Proton K/DM-2 Khrunichev State Research and Production Space Center × remove |
|---|---|---|---|
| Flights | 3 | 105 | 110 |
| Success rate | 66.7% | 98.1% | 93.6% |
| Thrust | 1,900 kN | 2,366 kN | — |
| Height | 28.2 m | 39.7 m | — |
| Diameter | 2.36 m | 3 m | — |
| Launch mass | 120 t | 182 t | — |
| LEO capacity | 2,065 kg | 2,820 kg | — |
| GTO capacity | 593 kg | — | — |
| Launch cost | — | $12M | — |
| Reusable | No | No | No |
| Stages | 4 | 3 | — |