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    COSMOS 839 DEB
            Launch Details
            
                
        
                    | Launched | 7 July 1976 | 
| Flight ended | – | 
| Status | Unknown | 
| Launch site | Plesetsk Missile and Space Complex, Russia | 
| Owner | Commonwealth of Independent States (former USSR) | 
| NORAD ID | 10454 | 
| COSPAR ID | 1976-067AF | 
| Observing | 
Current orbital elements
| Inclination | 65.662° | 
| Eccentricity | 0.07404 | 
| RA ascending node | 15.727 hr | 
| Argument perigee | 300.310° | 
| Mean anomaly | 52.666° | 
| Orbital period | 114.720 min | 
| Epoch of osculation | 02 Nov 2025, 04:53 | 
Derived Quantities