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 | 84.989° |
| Eccentricity | 0.00091 |
| RA ascending node | 22.503 hr |
| Argument perigee | 52.283° |
| Mean anomaly | 307.919° |
| Orbital period | 99.497 min |
| Epoch of osculation | 07 Aug 2026, 06:53 |
Derived Quantities
| Min Altitude | 735.2 km |
| Mean Altitude | 741.7 km |
| Peak Altitude | 748.2 km |
Orbital History
Drag the graphs below left or right to change the time range, or use your scroll wheel to zoom in or out.