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    SL-8 DEB
            Launch Details
            
                
        
                    | Launched | 11 February 1991 | 
| Flight ended | – | 
| Status | Unknown | 
| Launch site | Plesetsk Missile and Space Complex, Russia | 
| Owner | Commonwealth of Independent States (former USSR) | 
| NORAD ID | 21167 | 
| COSPAR ID | 1991-009AE | 
| Observing | 
Current orbital elements
| Inclination | 73.916° | 
| Eccentricity | 0.01365 | 
| RA ascending node | 4.791 hr | 
| Argument perigee | 78.801° | 
| Mean anomaly | 354.961° | 
| Orbital period | 117.138 min | 
| Epoch of osculation | 28 Oct 2025, 09:42 | 
Derived Quantities