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GPS 21
Launch Details
| Launched | 30 March 2003 |
| Flight ended | – |
| Status | Backup/Standby |
| Category |
Active satellites
|
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 27704 |
| COSPAR ID | 2003-010A |
| Alternative names |
USA 168 NAVSTAR 52 GPS BIIR-09 SVN 45 PRN 21 SLOT D3 |
| Observing |
Current orbital elements
| Inclination | 54.966° |
| Eccentricity | 0.00029 |
| RA ascending node | 22.372 hr |
| Argument perigee | 285.869° |
| Mean anomaly | 139.818° |
| Orbital period | 739.436 min |
| Epoch of osculation | 15 Sep 2025, 05:13 |
Derived Quantities
| Min Altitude | 20708.1 km |
| Mean Altitude | 20716.0 km |
| Peak Altitude | 20723.9 km |
Orbital History
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