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    PROSPERO
            Launch Details
            
                
        
                    | Launched | 27 October 1971 | 
| Flight ended | – | 
| Status | Unknown | 
| Launch site | Woomera, Australia | 
| Owner | United Kingdom | 
| NORAD ID | 5580 | 
| COSPAR ID | 1971-093A | 
| Alternative names | BLACK ARROW | 
| Observing | 
Current orbital elements
| Inclination | 82.036° | 
| Eccentricity | 0.05040 | 
| RA ascending node | 8.880 hr | 
| Argument perigee | 168.138° | 
| Mean anomaly | 193.221° | 
| Orbital period | 102.789 min | 
| Epoch of osculation | 29 Oct 2025, 12:45 | 
Derived Quantities
| Min Altitude | 531.3 km | 
| Mean Altitude | 897.7 km | 
| Peak Altitude | 1264.1 km | 
Orbital History
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