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    CZ-4 DEB
            Launch Details
            
                
        
                    | Launched | 2 September 1990 | 
| Flight ended | – | 
| Status | Unknown | 
| Launch site | Taiyuan Space Center, PRC | 
| Owner | People's Republic of China | 
| NORAD ID | 21911 | 
| COSPAR ID | 1990-081CH | 
| Observing | 
Current orbital elements
| Inclination | 98.370° | 
| Eccentricity | 0.00495 | 
| RA ascending node | 20.783 hr | 
| Argument perigee | 223.918° | 
| Mean anomaly | 263.052° | 
| Orbital period | 100.377 min | 
| Epoch of osculation | 26 Oct 2025, 13:38 | 
Derived Quantities