Browse satellite catalog
|
Map of low-earth satellites
|
Satellites above your horizon
|
3D map of low-earth satellites
Spacecraft information: 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 | 54.856° |
| Eccentricity | 0.00162 |
| RA ascending node | 8.974 hr |
| Argument perigee | 282.201° |
| Mean anomaly | 258.648° |
| Orbital period | 759.503 min |
| Epoch of osculation | 20 May 2026, 14:12 |
Derived Quantities
| Min Altitude | 21159.1 km |
| Mean Altitude | 21203.8 km |
| Peak Altitude | 21248.5 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.