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USA 55
Launch Details
| Launched | 4 April 1990 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 20547 |
| COSPAR ID | 1990-028B |
| Observing |
Current orbital elements
| Inclination | 94.108° |
| Eccentricity | 0.00666 |
| RA ascending node | 7.391 hr |
| Argument perigee | 294.209° |
| Mean anomaly | 65.220° |
| Orbital period | 93.912 min |
| Epoch of osculation | 16 Jul 2024, 05:06 |
Derived Quantities
| Min Altitude | 427.4 km |
| Mean Altitude | 473.0 km |
| Peak Altitude | 518.6 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.
Launched alongside
PEGSAT