Spacecraft information: USA 141
| 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 | 84.985° |
| Eccentricity | 0.00075 |
| RA ascending node | 0.318 hr |
| Argument perigee | 177.033° |
| Mean anomaly | 183.091° |
| Orbital period | 99.499 min |
| Epoch of osculation | 22 Jun 2026, 10:45 |
Derived Quantities
| Min Altitude | 736.4 km |
| Mean Altitude | 741.8 km |
| Peak Altitude | 747.1 km |
Orbital History
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