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Spacecraft information: SKYNET 4A
Launch Details
| Launched | 31 December 1989 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United Kingdom |
| NORAD ID | 20401 |
| COSPAR ID | 1990-001A |
| Observing |
Current orbital elements
| Inclination | 12.565° |
| Eccentricity | 0.00161 |
| RA ascending node | 23.380 hr |
| Argument perigee | 301.193° |
| Mean anomaly | 46.716° |
| Orbital period | 1454.526 min |
| Epoch of osculation | 12 Dec 2025, 05:44 |
Derived Quantities
| Min Altitude | 36085.2 km |
| Mean Altitude | 36153.7 km |
| Peak Altitude | 36222.1 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.