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Spacecraft information: NAVSTAR 21
Launch Details
| Launched | 30 September 1990 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 20830 |
| COSPAR ID | 1990-088A |
| Alternative names |
USA 64 GPS BII-09 SVN 15 |
| Observing |
Current orbital elements
| Inclination | 56.404° |
| Eccentricity | 0.00244 |
| RA ascending node | 1.068 hr |
| Argument perigee | 287.132° |
| Mean anomaly | 57.747° |
| Orbital period | 766.965 min |
| Epoch of osculation | 18 Dec 2025, 08:06 |
Derived Quantities
| Min Altitude | 21316.3 km |
| Mean Altitude | 21384.2 km |
| Peak Altitude | 21452.0 km |
Orbital History
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