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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 | 79.778° |
| Eccentricity | 0.14285 |
| RA ascending node | 6.879 hr |
| Argument perigee | 179.527° |
| Mean anomaly | 180.757° |
| Orbital period | 119.264 min |
| Epoch of osculation | 19 Nov 2024, 22:00 |
Derived Quantities
| Min Altitude | 508.5 km |
| Mean Altitude | 1655.0 km |
| Peak Altitude | 2801.5 km |
Orbital History
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