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Spacecraft information: STEX
Launch Details
| Launched | 2 October 1998 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 25489 |
| COSPAR ID | 1998-055A |
| Alternative names |
SPACE TECHNOLOGY EXPERIMENT |
| Observing |
Current orbital elements
| Inclination | 84.985° |
| Eccentricity | 0.00079 |
| RA ascending node | 21.177 hr |
| Argument perigee | 339.850° |
| Mean anomaly | 20.239° |
| Orbital period | 99.182 min |
| Epoch of osculation | 16 Jul 2026, 06:21 |
Derived Quantities
| Min Altitude | 721.0 km |
| Mean Altitude | 726.7 km |
| Peak Altitude | 732.3 km |
Orbital History
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