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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 | 89.522° |
| Eccentricity | 0.00692 |
| RA ascending node | 18.334 hr |
| Argument perigee | 162.854° |
| Mean anomaly | 197.501° |
| Orbital period | 101.159 min |
| Epoch of osculation | 15 Sep 2025, 00:51 |
Derived Quantities
| Min Altitude | 770.9 km |
| Mean Altitude | 820.7 km |
| Peak Altitude | 870.4 km |
Orbital History
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