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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 | 21.405° |
| Eccentricity | 0.70213 |
| RA ascending node | 14.990 hr |
| Argument perigee | 174.169° |
| Mean anomaly | 203.620° |
| Orbital period | 563.032 min |
| Epoch of osculation | 15 Sep 2025, 05:49 |
Derived Quantities
| Min Altitude | 356.9 km |
| Mean Altitude | 16215.5 km |
| Peak Altitude | 32074.1 km |
Orbital History
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