| Official name | SL-12 PLAT |
| Alternative name | Proton-K/DM-2 fourth stage casing |
| Cospar ID | 1990-116C |
| Norad ID | 21040 |
| Launch date | 1990-12-27 |
| Launch site | TTMTR |
| Launch vehicle | Proton-K Blok-DM-2 |
| RCS size | UNKNOWN |
| Decay date | 1990-12-28 |
| Shape | Cyl |
| Mass (kg) | 792.86 |
| Diameter (m) | 3.7 |
| Height (m) | 4 |
| Span (m^2) | 4 |






