| Official name | SL-6 R/B |
| Alternative name | Blok-I (Molniya-M Blok-L) |
| Cospar ID | 1966-116B |
| Norad ID | 2629 |
| Launch date | 1966-12-21 |
| Launch site | TTMTR |
| RCS size | UNKNOWN |
| Decay date | 1966-12-22 |
| Shape | Cyl |
| Mass (kg) | 1982.16 |
| Diameter (m) | 2.66 |
| Height (m) | 6.7 |
| Span (m^2) | 6.7 |






