- Family: Thor
- Length: 31 m
- Diameter: 2.44 m
- Launch Mass: 50 T
- Low Earth Orbit Capacity: 250 kg
The Thor Delta A was manufactured by McDonnell Douglas with the first launch on 1962-10-02. Thor Delta A has 2 successful launches and 0 failed launches with a total of 2 launches. American orbital launch vehicle family with Thor first stage and a delta second stage.