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TDRS 4
Launch Details
| Launched | 12 March 1989 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 19883 |
| COSPAR ID | 1989-021B |
| Observing |
Current orbital elements
| Inclination | 12.832° |
| Eccentricity | 0.00171 |
| RA ascending node | 23.758 hr |
| Argument perigee | 296.303° |
| Mean anomaly | 58.396° |
| Orbital period | 1462.203 min |
| Epoch of osculation | 17 Oct 2025, 18:39 |
Derived Quantities
| Min Altitude | 36230.4 km |
| Mean Altitude | 36303.2 km |
| Peak Altitude | 36376.0 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.