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NAVSTAR 18
Launch Details
| Launched | 23 January 1990 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 20452 |
| COSPAR ID | 1990-008A |
| Alternative names |
USA 50 GPS BII-06 SVN 18 |
| Observing |
Current orbital elements
| Inclination | 54.782° |
| Eccentricity | 0.00161 |
| RA ascending node | 9.865 hr |
| Argument perigee | 275.982° |
| Mean anomaly | 84.921° |
| Orbital period | 759.502 min |
| Epoch of osculation | 03 May 2025, 11:30 |
Derived Quantities
| Min Altitude | 21159.3 km |
| Mean Altitude | 21203.8 km |
| Peak Altitude | 21248.3 km |
Orbital History
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