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Spacecraft information: SKYNET 4A R/B
Launch Details
| Launched | 31 December 1989 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 20404 |
| COSPAR ID | 1990-001D |
| Alternative names |
PAM-D2 |
| Observing |
Current orbital elements
| Inclination | 21.226° |
| Eccentricity | 0.70465 |
| RA ascending node | 12.398 hr |
| Argument perigee | 243.281° |
| Mean anomaly | 30.622° |
| Orbital period | 562.462 min |
| Epoch of osculation | 11 Dec 2025, 14:29 |
Derived Quantities
| Min Altitude | 295.5 km |
| Mean Altitude | 16200.3 km |
| Peak Altitude | 32105.0 km |
Orbital History
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