| 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) | 343.07 |
| Inclination (deg) | 65 |
| Perigee (km) | 336 |
| Apogee (km) | 19374 |
| Eccentricity | 0.965905631659056 |
| Mean motion (revs. per day) | 4.19739411781852 |
| Semi-Major axis (km) | 16233.135 |
| Raan (deg) | 215.258 |
| Arg of perigee (deg) | 184.889 |
| Shape | Cyl |
| Mass (kg) | 56 |
| Diameter (m) | 0.6 |
| Height (m) | 1.1 |
| Span (m^2) | 1.1 |
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