Browse satellite catalog
|
Map of low-earth satellites
|
Satellites above your horizon
|
3D map of low-earth satellites
Spacecraft information: ESIAFI 1
Launch Details
| Launched | 20 February 1981 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 12309 |
| COSPAR ID | 1981-018A |
| Alternative names |
COMSTAR 4 |
| Observing |
Current orbital elements
| Inclination | 8.884° |
| Eccentricity | 0.00039 |
| RA ascending node | 20.788 hr |
| Argument perigee | 56.340° |
| Mean anomaly | 303.667° |
| Orbital period | 1436.226 min |
| Epoch of osculation | 14 Mar 2026, 04:35 |
Derived Quantities
| Min Altitude | 35780.0 km |
| Mean Altitude | 35796.3 km |
| Peak Altitude | 35812.5 km |
Launched alongside
ATLAS CENTAUR R/BOrbital History
Drag the graphs below left or right to change the time range, or use your scroll wheel to zoom in or out.