| Official name | SL-8 R/B |
| Alternative name | Cosmos 3 second stage (S3) (Cosmos 3M (11K65M)) |
| Cospar ID | 1974-028B |
| Norad ID | 7284 |
| Launch date | 1974-04-29 |
| Launch site | PKMTR |
| Launch vehicle | Kosmos-3M |
| RCS size | LARGE |
| Decay date | ON ORBIT |
| Period (min) | 113.25 |
| Inclination (deg) | 74.04 |
| Perigee (km) | 1363 |
| Apogee (km) | 1389 |
| Eccentricity | 0.00944767441860465 |
| Mean motion (revs. per day) | 12.7152317880795 |
| Semi-Major axis (km) | 7754.135 |
| Raan (deg) | 270.1572 |
| Arg of perigee (deg) | 185.2787 |
| Shape | Cyl |
| Mass (kg) | 1434 |
| Diameter (m) | 2.4 |
| Height (m) | 4.2 |
| Span (m^2) | 4.2 |
