Browse satellite catalog
|
Map of low-earth satellites
|
Satellites above your horizon
|
3D map of low-earth satellites
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 | 94.107° |
| Eccentricity | 0.00614 |
| RA ascending node | 22.794 hr |
| Argument perigee | 154.558° |
| Mean anomaly | 205.872° |
| Orbital period | 93.495 min |
| Epoch of osculation | 03 Sep 2025, 00:05 |
Derived Quantities
| Min Altitude | 410.8 km |
| Mean Altitude | 452.7 km |
| Peak Altitude | 494.6 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