- Family: Thor
- Length: 28 m
- Diameter: 2.44 m
- Launch Mass: 68 T
- Low Earth Orbit Capacity: 540 kg
The Thor Delta E1 was manufactured by McDonnell Douglas with the first launch on 1966-07-01. Thor Delta E1 has 16 successful launches and 1 failed launches with a total of 17 launches. American orbital launch vehicle family with Thor first stage and a delta second stage.