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COSMOS 551
Launch Details
| Launched | 5 March 1973 |
| Flight ended | 19 March 1973 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 6378 |
| COSPAR ID | 1973-012A |
| Observing |