FUNCTION c_getorb (tsec, model, orbit, passdir, eqxing)
double *tsec; struct MODEL *model; long *orbit; long *passdir; double *eqxing;
Total seconds past midnight Greenwich mean time. If the julian day of acquisition is different from the day of the ephemeris data, tsec should be the seconds from 00:00:00 of the day of acquisition.
Structure containing the model and orbital information.
Calculated orbit number.
= 1: Ascending pass = -1: Descending pass
Equatorial crossing in radians.
Propagate the satellite orbit to the time specified by tsec. Calculate the direction of the pass and the orbit number referenced from the equator. Calculate the longitude at which the satellite orbit crosses the equator.
c_getorb() has no return value.