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REX 1
Launch Details
| Launched | 28 June 1991 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 21527 |
| COSPAR ID | 1991-045A |
| Observing |
Current orbital elements
| Inclination | 89.524° |
| Eccentricity | 0.00688 |
| RA ascending node | 18.158 hr |
| Argument perigee | 8.404° |
| Mean anomaly | 351.829° |
| Orbital period | 101.158 min |
| Epoch of osculation | 02 Nov 2025, 11:14 |
Derived Quantities
| Min Altitude | 771.1 km |
| Mean Altitude | 820.6 km |
| Peak Altitude | 870.1 km |
Orbital History
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