| Official name | SL-12 R/B(2) |
| Alternative name | Blok-DM-2 (Proton-K/DM-2) |
| Cospar ID | 1989-081D |
| Norad ID | 20266 |
| Launch date | 1989-09-28 |
| Launch site | TTMTR |
| Launch vehicle | Proton-K Blok-DM-2 |
| RCS size | LARGE |
| Decay date | ON ORBIT |
| Period (min) | 1431.12 |
| Inclination (deg) | 12.31 |
| Perigee (km) | 35572 |
| Apogee (km) | 35806 |
| Eccentricity | 0.00327832105130432 |
| Mean motion (revs. per day) | 1.00620493040416 |
| Semi-Major axis (km) | 42067.135 |
| Raan (deg) | 335.5236 |
| Arg of perigee (deg) | 117.2401 |
| Shape | Cyl |
| Mass (kg) | 2120.91 |
| Diameter (m) | 3.7 |
| Height (m) | 6.27 |
| Span (m^2) | 6.27 |
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