Browse satellite catalog
|
Map of low-earth satellites
|
Satellites above your horizon
|
3D map of low-earth satellites
Spacecraft information: NATO 4A R/B
Launch Details
| Launched | 7 January 1991 |
| Flight ended | – |
| Status | Unknown |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 21049 |
| COSPAR ID | 1991-001C |
| Alternative names |
PAM-D |
| Observing |
Current orbital elements
| Inclination | 25.946° |
| Eccentricity | 0.70755 |
| RA ascending node | 1.875 hr |
| Argument perigee | 130.780° |
| Mean anomaly | 314.734° |
| Orbital period | 635.568 min |
| Epoch of osculation | 27 Jan 2026, 13:56 |
Derived Quantities
| Min Altitude | 790.3 km |
| Mean Altitude | 18116.0 km |
| Peak Altitude | 35441.6 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.