Spacecraft information: COSMOS 1820
| Launched | 13 February 1987 |
| Flight ended | 5 March 1987 |
| Status | Decayed |
| Launch site | Tyuratam Missile and Space Center, Kazakhstan (Also known as Baikonur Cosmodrome) |
| Owner | Commonwealth of Independent States (former USSR) |
| NORAD ID | 17523 |
| COSPAR ID | 1987-016A |
| Observing |
Launched alongside
SL-16 R/B