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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 | 12.834° |
| Eccentricity | 0.00156 |
| RA ascending node | 23.770 hr |
| Argument perigee | 296.828° |
| Mean anomaly | 44.233° |
| Orbital period | 1462.212 min |
| Epoch of osculation | 15 Sep 2025, 05:55 |
Derived Quantities
| Min Altitude | 36236.8 km |
| Mean Altitude | 36303.4 km |
| Peak Altitude | 36369.9 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.