Sputnik 8A91 Launch History
Every orbital and deep-space launch attempt by the Sputnik 8A91, year by year, drawn from the GCAT launch catalog. It is one of the variants covered on the Sputnik family page.
Data current as of 2026-07-20.
Sputnik 8A91 made 2 orbital and deep-space launch attempts, all in 1958. It is part of the Sputnik family. Of those, 1 succeeded and 1 failed. The success rate comes to 50 percent.
2
Launch attempts
1
Successes
1
Failures
50%
Success rate
Launches per year
Successes
Failures
Each bar links to that year's full chronology.
Year by year
| Year | Attempts | Successes | Failures | Success rate |
|---|---|---|---|---|
| 1958 | 2 | 1 | 1 | 50% |
Launch sites used
Sites the Sputnik 8A91 launched from, across every launch in the catalog.
| Site | Country | Launches | Successes | Failures |
|---|---|---|---|---|
| NIIP-5 | 🇷🇺Soviet Union | 2 | 1 | 1 |
Launch chronology
Every Sputnik 8A91 launch in the catalog, newest first.
| Date | Designator | Payloads | Site / Pad | Outcome |
|---|---|---|---|---|
| May 15, 1958 | 1958 DEL | B1-1 : 8K74D, 8K74G, 8K74V +5 more, 8K74B, Fairing section, Golovniy Obtekatel', 8K74A, D No. 2 | NIIP-5 / LC1 | Success |
| Apr 27, 1958 | 1958-F03 | B1-2 : 8K74D, 8K74G, 8K74V +4 more, 8K74B, Golovniy Obtekatel', 8K74A, D No. 1 | NIIP-5 / LC1 | Failure |