Compare rockets
Pick up to 4 vehicles to compare specs and flight records side by side. Browse all →
| Specification | Athena I Lockheed Martin × remove | Proton K/DM-2 Khrunichev State Research and Production Space Center × remove | Tsiklon-2 Yuzhnoye Design Bureau × remove |
|---|---|---|---|
| Flights | 4 | 110 | 105 |
| Success rate | 75% | 93.6% | 98.1% |
| Thrust | 1,900 kN | — | 2,366 kN |
| Height | 18.9 m | — | 39.7 m |
| Diameter | 2.36 m | — | 3 m |
| Launch mass | 66 t | — | 182 t |
| LEO capacity | 820 kg | — | 2,820 kg |
| GTO capacity | — | — | — |
| Launch cost | — | — | $12M |
| Reusable | No | No | No |
| Stages | 3 | — | 3 |