PGM-17 Thor
| SM-75/PGM-17A Thor | |
|---|---|
 | |
| Type | Intermediate Range Ballistic Missile (IRBM) |
| Place of origin | United States |
| Service history | |
| Used by | United States Air Force (testing) Royal Air Force (operational deployment) |
| Production history | |
| Designed | 1957 |
| Manufacturer | Douglas Aircraft Company |
| Produced | 1959–1960 |
| No. built | About 225; peak deployment was 60 |
| Variants | Delta rockets Thor rocket family |
| Specifications | |
| Mass | 49,590 kilograms (109,330 lb) at launch. |
| Length | 19.76 metres (64 ft 10 in). |
| Diameter | 2.4 metres (8 ft). |
The PGM-17A Thor was the first operational ballistic missile of the United States Air Force (USAF).
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