ERS-2 Orbit
The elliptical orbit is sun-synchronous, near-polar, with a mean altitude of 785 km, an inclination of 98.5° and a local solar time at the descending node of 10:30 a.m.
Orbit parameters
| Main characteristics | |
|---|---|
| Semi-major axis | 7159.5 km |
| Eccentricity | 0.0001042 |
| Argument of perigee | 92.4836° |
| Inclination (sun-synchronous) | 98.543° |
| Auxiliary data | |
| Mean altitude | 799.8 km |
| Nodal period | 50 min 25.5 s |
| Repeat cycle | 35 days |
| Number of passes per cycle | 1002 |
| Ground track separation at Equator | 80 km |
| Orbital velocity | 7.45 km/s |
Further information on ERS (Esa website).
Past missions 
