COSMOS 861 DEB
| Launched | 20 October 1976 |
| Flight ended | 20 October 1976 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 9633 |
| COSPAR ID | 1976-104B |
| Observing |