PROGNOZ 1
| Launched | 13 April 1972 |
| Flight ended | 18 January 1980 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 5941 |
| COSPAR ID | 1972-029A |
| Observing |