| Official name | SL-8 R/B |
| Alternative name | Cosmos 3 second stage (S3) (Cosmos 3M (11K65M)) |
| Cospar ID | 2005-048C |
| Norad ID | 28910 |
| Launch date | 2005-12-21 |
| Launch site | PKMTR |
| Launch vehicle | Kosmos-3M |
| RCS size | LARGE |
| Decay date | ON ORBIT |
| Period (min) | 114.74 |
| Inclination (deg) | 82.47 |
| Perigee (km) | 1431 |
| Apogee (km) | 1456 |
| Eccentricity | 0.00865950813993765 |
| Mean motion (revs. per day) | 12.550113299634 |
| Semi-Major axis (km) | 7821.635 |
| Raan (deg) | 200.3838 |
| Arg of perigee (deg) | 241.6316 |
| Shape | Cyl |
| Mass (kg) | 1434 |
| Diameter (m) | 2.4 |
| Height (m) | 4.2 |
| Span (m^2) | 4.2 |
