Spacecraft information: ESSA 9
| Launched | 25 February 1969 |
| Flight ended | – |
| Status | Non-operational |
| Launch site | Air Force Eastern Test Range, Florida, USA |
| Owner | United States |
| NORAD ID | 3764 |
| COSPAR ID | 1969-016A |
| Alternative names |
TOS-G |
| Observing |
Current orbital elements
| Inclination | 101.403° |
| Eccentricity | 0.00508 |
| RA ascending node | 4.926 hr |
| Argument perigee | 304.671° |
| Mean anomaly | 179.735° |
| Orbital period | 115.213 min |
| Epoch of osculation | 10 Mar 2026, 11:29 |
Derived Quantities
| Min Altitude | 1432.4 km |
| Mean Altitude | 1472.2 km |
| Peak Altitude | 1512.0 km |
Launched alongside
DELTA 1 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.