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Spacecraft information: USA 141
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 | 25615 |
| COSPAR ID | 1998-055C |
| Alternative names |
ATEX ADVANCED TETHER EXPERIMENT |
| Observing |
Current orbital elements
| Inclination | 84.986° |
| Eccentricity | 0.00095 |
| RA ascending node | 7.605 hr |
| Argument perigee | 77.975° |
| Mean anomaly | 282.251° |
| Orbital period | 99.510 min |
| Epoch of osculation | 20 Dec 2025, 09:20 |
Derived Quantities
| Min Altitude | 735.5 km |
| Mean Altitude | 742.3 km |
| Peak Altitude | 749.0 km |
Orbital History
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