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Spacecraft information: UFO 8
Launch Details
| Launched | 15 March 1998 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 25258 |
| COSPAR ID | 1998-016A |
| Alternative names |
USA 138 |
| Observing |
Current orbital elements
| Inclination | 10.934° |
| Eccentricity | 0.00087 |
| RA ascending node | 1.582 hr |
| Argument perigee | 261.470° |
| Mean anomaly | 4.285° |
| Orbital period | 1435.702 min |
| Epoch of osculation | 06 Jan 2026, 02:27 |
Derived Quantities
| Min Altitude | 35749.5 km |
| Mean Altitude | 35786.0 km |
| Peak Altitude | 35822.5 km |
Launched alongside
ATLAS 2 CENTAUR R/BOrbital History
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