| Official name | SL-12 R/B(AUX MOTOR) |
| Alternative name | Proton-K/DM-2 ullage motor (SOZ) |
| Cospar ID | 2005-050F |
| Norad ID | 28920 |
| Launch date | 2005-12-25 |
| Launch site | TTMTR |
| Launch vehicle | Proton-K Blok-DM-2 |
| RCS size | MEDIUM |
| Decay date | ON ORBIT |
| Period (min) | 342.98 |
| Inclination (deg) | 65 |
| Perigee (km) | 331 |
| Apogee (km) | 19374 |
| Eccentricity | 0.966404465871606 |
| Mean motion (revs. per day) | 4.19849553909849 |
| Semi-Major axis (km) | 16230.635 |
| Raan (deg) | 209.3261 |
| Arg of perigee (deg) | 184.1351 |
| Shape | Cyl |
| Mass (kg) | 56 |
| Diameter (m) | 0.6 |
| Height (m) | 1.1 |
| Span (m^2) | 1.1 |
