COSMOS 843
| Launched | 20 July 1976 |
| Flight ended | 21 July 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 | 9043 |
| COSPAR ID | 1976-071A |
| Observing |
Launched alongside
SL-11 R/B