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COSMOS 21
Launch Details
| Launched | 10 November 1963 |
| Flight ended | 13 November 1963 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 687 |
| COSPAR ID | 1963-044A |
| Observing |
Timeline
| 1963 Nov 11 | – | Launch from Site 1/5 at the Baikonur Cosmodrome |
| 1963 Nov 11 | – | Spacecraft reached low-Earth orbit |
| 1963 Nov 11 | – | Last successful contact with spacecraft |
| 1963 Nov 11 | – | Launch failure due to engine failure |
| 1963 Nov 14 | – | Spacecraft burnt up upon reentry to Earth's atmosphere |
Launched alongside
SL-6 R/B