| Official name | SL-6 R/B |
| Alternative name | Blok-I (Molniya) |
| Cospar ID | 1963-044B |
| Norad ID | 688 |
| Launch date | 1963-11-11 |
| Launch site | TTMTR |
| Launch vehicle | Molniya |
| RCS size | UNKNOWN |
| Decay date | 1963-11-12 |
| Shape | Cyl |
| Mass (kg) | 3500 |
| Diameter (m) | 2.66 |
| Height (m) | 9.4 |
| Span (m^2) | 9.4 |






