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Thor Delta M

Rocket file · LV-409

Thor Delta M

McDonnell Douglas · Thor · RETIRED

Photograph: NASA · NASA Image and Media Guidelines · licence

Thor Delta M is an expendable launch vehicle built by McDonnell Douglas. It stands 34.0 m tall, lifts 355 kg to low Earth orbit, first flew on 19 September 1968. It has flown 12 times with 10 successes, a success rate of 83.3%. It has nothing on the Launch Library 2 schedule right now.

Specification

Vehicle spec sheet

ON FILE
Height34.0 m
Diameter2.4 m
Payload to LEO355 kg
Payload to GTO355 kg
Maiden flight19 September 1968
ReusableNo, expendable
Launch cost$22.3M
StatusRETIRED

As listed by Launch Library 2. The cost is Launch Library’s figure, not a quoted price. Figures for rockets outside the sixty most-flown were last read on 2026-11-05.

Flight record

Reliability

ON RECORD
Total flights12
Successful10
Failed2
Success rate83.3%
Landing attempts0
Landing successN/A
Scheduled0
VariantDelta M

About Thor Delta M

American orbital launch vehicle family with Thor first stage and a delta second stage.

Upcoming flights

Manifest

EMPTY

Thor Delta M is retired, and no flight is filed.

All upcoming launches

From NASA's public image library and Wikimedia Commons. Each photo shows the credit its licence asks for and links back to where it came from.

Delta-E launching Pioneer-6
Delta-E launching Pioneer-6Wikimedia Commons ↗
Delta-M launching Intelsat-3 satellite
Delta-M launching Intelsat-3 satelliteWikimedia Commons ↗
Delta-M with Skynet-1A
Delta-M with Skynet-1ANASA, Image ID: KSC-69P-0941 · public domainWikimedia Commons ↗

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Common questions

How many times has Thor Delta M flown?
12 times, with 10 successes and 2 failures.
What is Thor Delta M's success rate?
83.3%. That's 10 successful flights out of 12 attempts.
How much can Thor Delta M lift to orbit?
Launch Library 2 lists Thor Delta M at 355 kg to low Earth orbit and 355 kg to geostationary transfer orbit.
Is Thor Delta M reusable?
No. Launch Library 2 lists Thor Delta M as expendable, so no stage is recovered to fly again.