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SPACENET 4
Launch Details
| Launched | 12 April 1991 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 21227 |
| COSPAR ID | 1991-028A |
| Alternative names |
ASC 2 |
| Observing |
Current orbital elements
| Inclination | 13.520° |
| Eccentricity | 0.00050 |
| RA ascending node | 1.056 hr |
| Argument perigee | 291.820° |
| Mean anomaly | 72.887° |
| Orbital period | 1446.195 min |
| Epoch of osculation | 14 Sep 2025, 13:13 |
Derived Quantities
| Min Altitude | 35969.9 km |
| Mean Altitude | 35991.2 km |
| Peak Altitude | 36012.4 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.