| Official name | SL-8 R/B |
| Alternative name | Cosmos 3 second stage (S3) (Cosmos 3M (11K65M)) |
| Cospar ID | 1973-042B |
| Norad ID | 6708 |
| Launch date | 1973-06-20 |
| Launch site | PKMTR |
| Launch vehicle | Kosmos-3M |
| RCS size | LARGE |
| Decay date | ON ORBIT |
| Period (min) | 104.77 |
| Inclination (deg) | 82.95 |
| Perigee (km) | 973 |
| Apogee (km) | 994 |
| Eccentricity | 0.0106761565836299 |
| Mean motion (revs. per day) | 13.744392478763 |
| Semi-Major axis (km) | 7361.635 |
| Raan (deg) | 74.4543 |
| Arg of perigee (deg) | 67.9504 |
| Shape | Cyl |
| Mass (kg) | 1434 |
| Diameter (m) | 2.4 |
| Height (m) | 4.2 |
| Span (m^2) | 4.2 |
