ERS-1 Mission Phase E
Phase E parameters
Phase E parameters
- 168 days repeat cycle
- 2411 orbits per cycle
- 2444 orbits in phase
Orbit number characteristics
- First absolute orbit number is: 14302 on 10-apr-94, 17:39:05.093 UTC
- First internal track: 1792, asc. Long. 72.7342
- End of the phase: orbit 16745, on 28-sep-94, 00:50:18.507 UTC
Orbit parameters
- orbit eccentricity: 0.001165
- orbit inclination: 98.4913 deg
- asc. node Long: 72.7342 deg
- semi-major axis: 7147190.68 m
- mean nodal period: 6020.406470 s
- mean anomaly: 270.1334 deg
- argument of perigee: 90 deg
Formulas from Relative (track) to Absolute Orbit Number
ABS_ORB_NUM = REL_ORB_NUM + (CYCLE_NUM-139)*2411 +12510
CYCLE_NUM = INT( ( ABS_ORB_NUM-12511)/2411 ) + 139
REL_ORB_NUM= ABS_ORB_NUM -12510 -(CYCLE_NUM-139) *2411
Where:
- the "Absolute Orbit Number" is counted from the beginning of the mission;
- the "Relative Orbit Number" (track), in a given cycle, is counted starting from the first orbit East of Greenwich;
- and the "Cycle Number" is increased whenever the track 1 is rivisited (note that cycles can be uncomplete).
This information was retrieved from ESA/ESRIN
