- Family: Thor
- Length: 31 m
- Diameter: 2.44 m
- Launch Mass: 51 T
- Low Earth Orbit Capacity: 370 kg
The Thor Delta B was manufactured by McDonnell Douglas with the first launch on 1962-12-13. Thor Delta B has 8 successful launches and 1 failed launches with a total of 9 launches. American orbital launch vehicle family with Thor first stage and a delta second stage.