URL: http://www.altimetry.info/html/missions/ers2/orbit_en.html
|
URL: http://www.altimetry.info/html/missions/ers2/orbit_en.html |
|
Missions Current missionsERS-2 |
Instruments | Orbit |
To carry out its mission ERS-2's orbit must enable its instruments to scan along predetermined paths designed to give optimum coverage for a set number of orbits. To achieve this, ERS-2 is a three-axis-stabilised, Earth-pointing satellite in yaw steering mode (YSM). 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.
ERS-2 orbit
Heavens Above
35-day orbit
| Main characteristics | |
|---|---|
| Semi-major axis | 7159.5 km |
| Eccentricity | 0.0001042 |
| Argument of perigee | 92.4836° |
| Inclination (sun-synchronous) | 98.55° |
| Auxiliary data | |
| Reference altitude (equatorial) | 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 |
| Acute angle at Equator crossings | |
| Longitude at Equator of pass 1 | |
| Orbital velocity | 7.45 km/s |
| Ground scanning velocity | |
Further information on ERS (ESA website)