Thor Delta N Launch History
Every orbital and deep-space launch attempt by the Thor Delta N, year by year, drawn from the GCAT launch catalog. It is one of the variants covered on the Thor family page.
Data current as of 2026-07-20.
Thor Delta N made 6 orbital and deep-space launch attempts between 1968 and 1972. It is part of the Thor family. All 6 flights succeeded. The busiest year was 1968, with 2 flights. The most recent flight in the catalog was in 1972.
6
Launch attempts
6
Successes
0
Failures
100%
Success rate
Launches per year
Successes
Failures
Each bar links to that year's full chronology.
Year by year
Launch sites used
Sites the Thor Delta N launched from, across every launch in the catalog.
| Site | Country | Launches | Successes | Failures |
|---|---|---|---|---|
| V | 🇺🇸United States | 3 | 3 | 0 |
| CC | 🇺🇸United States | 3 | 3 | 0 |
Launch chronology
Every Thor Delta N launch in the catalog, newest first.
| Date | Designator | Payloads | Site / Pad | Outcome |
|---|---|---|---|---|
| Mar 12, 1972 | 1972-014 | 573/D088 : Improved Delta PLF, LT Thor DSV-2L-1B 573, Castor 2 +5 more, TD-1A optics cover part, TD-1A optics cover, deb TD-1A, Delta DSV-3E-4, TD-1A | V / SLC2E | Success |
| Sep 29, 1971 | 1971-083 | 565/D085 : Improved Delta PLF, LT Thor DSV-2L-1B 565, Castor 2 +4 more, OSO 7 launch debris, DSV-3E-3 85, ERS 33, OSO H | CC / LC17A | Success |
| Aug 9, 1969 | 1969-068 | 548/D072 : Improved Delta PLF, LT Thor DSV-2L-1B 548, Castor 2 +3 more, DSV-3E-3 72, PAC, OSO G | CC / LC17A | Success |
| Jun 29, 1969 | 1969-056 | 539/D070 : Improved Delta PLF, LT Thor DSV-2L-1B 539, Castor 2 +5 more, Bios Retro S/N 10, deb Bios 3 capsule, DSV-3E-3 S/N 20234, Bios D SRV, Bios D Adapter | CC / LC17A | Success |
| Dec 15, 1968 | 1968-114 | 532/D062 : Improved Delta PLF, LT Thor DSV-2L-1B 532, Castor 2 +4 more, deb Delta 62, ESSA 8 despin weight, DSV-3E-3 62, TOS F | V / SLC2E | Success |
| Aug 16, 1968 | 1968-069 | 528/D058 : Improved Delta PLF, LT Thor DSV-2L-1B 528, Castor 2 +4 more, deb ESSA 7, ESSA 7 despin weight, DSV-3E-3 S/N 20227, TOS E | V / SLC2E | Success |