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    ESSA 2
            Launch Details
            
                
        
                    | Launched | 27 February 1966 | 
| Flight ended | – | 
| Status | Non-operational | 
| Launch site | Air Force Eastern Test Range, Florida, USA | 
| Owner | United States | 
| NORAD ID | 2091 | 
| COSPAR ID | 1966-016A | 
| Alternative names | 
                                                            OT-2                                 | 
                    
| Observing | 
Current orbital elements
| Inclination | 101.237° | 
| Eccentricity | 0.00390 | 
| RA ascending node | 14.410 hr | 
| Argument perigee | 357.443° | 
| Mean anomaly | 115.481° | 
| Orbital period | 113.437 min | 
| Epoch of osculation | 02 Nov 2025, 08:58 | 
Derived Quantities
| Min Altitude | 1361.2 km | 
| Mean Altitude | 1391.4 km | 
| Peak Altitude | 1421.7 km | 
Orbital History
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