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EXPLORER 31
Launch Details
| Launched | 28 November 1965 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 1806 |
| COSPAR ID | 1965-098B |
| Alternative names |
ISIS-X |
| Observing |
Current orbital elements
| Inclination | 79.812° |
| Eccentricity | 0.14352 |
| RA ascending node | 12.410 hr |
| Argument perihelion | 153.673° |
| Mean anomaly | 214.516° |
| Orbital period | 119.381 min |
| Epoch of osculation | 30 May 2023, 19:45 |
Derived Quantities
| Min Altitude | 507.6 km |
| Mean Altitude | 1660.3 km |
| Peak Altitude | 2812.9 km |
Orbital History
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