Thor Delta N
Thor family
· built by McDonnell Douglas
· maiden flight 1968-08-16
Profile data last updated: 2026-08-29T15:37:07.354998+00:00 | 7531-10-17
American orbital launch vehicle family with Thor first stage and a delta second stage.
Specifications
33.0 mLength
2.44 mDiameter
90 tLaunch mass
2Stages
1590 kNLiftoff thrust
Payload Capacity
No payload capacity figures published for this configuration.
Lifetime Launch Record
As reported by Launch Library 2 across this rocket's entire history, not just the launches tracked on this site.
6Total launches
5Successful
1Failed
0Upcoming
Launches Tracked on This Site
6In our archive
83.3%Success rate
Aug 16, 1968 11:24 UTCEarliest tracked
Mar 12, 1972 01:55 UTCMost recent
| Mission | Date | Status |
|---|---|---|
| Thor Delta N | TD-1A | Mar 12, 1972 01:55 UTC | Success |
| Thor Delta N | OSO 7 | Sep 29, 1971 09:45 UTC | Failure |
| Thor Delta N | OSO 6 | Aug 09, 1969 07:52 UTC | Success |
| Thor Delta N | Biosat 3 | Jun 29, 1969 03:15 UTC | Success |
| Thor Delta N | ESSA 8 | Dec 15, 1968 17:21 UTC | Success |
| Thor Delta N | ESSA 7 | Aug 16, 1968 11:24 UTC | Success |