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ESSA 4
Launch Details
| Launched | 25 January 1967 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Western Test Range, California, USA |
| Owner | United States |
| NORAD ID | 2657 |
| COSPAR ID | 1967-006A |
| Alternative names |
TOS-B |
| Observing |
Current orbital elements
| Inclination | 102.084° |
| Eccentricity | 0.00727 |
| RA ascending node | 23.700 hr |
| Argument perigee | 252.150° |
| Mean anomaly | 163.480° |
| Orbital period | 113.396 min |
| Epoch of osculation | 28 Jun 2025, 11:05 |
Derived Quantities
| Min Altitude | 1333.1 km |
| Mean Altitude | 1389.6 km |
| Peak Altitude | 1446.0 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.