Space · launch vehicle
Thor Delta E1
MDC
RETIRED
At a glance
Launches
17
Success rate
94.1%
16 ok · 1 failed
Payload to LEO
540 kg
Payload to GTO
150 kg
Manufacturer
McDonnell DouglasStatus
RetiredFirst flight
01 Jul 1966Reusable
NoHeight
28 mDiameter
2.44 mLaunch mass
68 tLiftoff thrust
1,450 kNStages
4Launch cost
—Booster landings
—Links
WikipediaAbout
American orbital launch vehicle family with Thor first stage and a delta second stage.
Source The Space Devs — Launch Library 2
Last checked 29 Sept 2026