| Official name | SL-12 R/B(2) |
| Alternative name | Blok-DM (Proton-K/DM) |
| Cospar ID | 1985-107F |
| Norad ID | 16339 |
| Launch date | 1985-11-15 |
| Launch site | TTMTR |
| Launch vehicle | Proton-K Blok-DM |
| RCS size | LARGE |
| Decay date | ON ORBIT |
| Period (min) | 1476.98 |
| Inclination (deg) | 11.69 |
| Perigee (km) | 36501 |
| Apogee (km) | 36665 |
| Eccentricity | 0.00224147828226225 |
| Mean motion (revs. per day) | 0.974962423323268 |
| Semi-Major axis (km) | 42961.135 |
| Raan (deg) | 325.3167 |
| Arg of perigee (deg) | 118.6341 |
| Shape | Cyl |
| Mass (kg) | 2120.91 |
| Diameter (m) | 3.7 |
| Height (m) | 6.27 |
| Span (m^2) | 6.27 |
