sgp4ext.cpp   sgp4ext.cpp 
skipping to change at line 221 skipping to change at line 221
{ {
return log( xval + sqrt( xval*xval + 1.0 ) ); return log( xval + sqrt( xval*xval + 1.0 ) );
} // end asinh } // end asinh
/* ------------------------------------------------------------------------ ----- /* ------------------------------------------------------------------------ -----
* *
* function newtonnu * function newtonnu
* *
* this function solves keplers equation when the true anomaly is known. * this function solves keplers equation when the true anomaly is known.
* the mean and eccentric, parabolic, or hyperbolic anomaly is also found . * the mean and eccentric, parabolic, or hyperbolic anomaly is also found .
* the parabolic limit at 168 is arbitrary. the hyperbolic anomaly is als o * the parabolic limit at 168 degree is arbitrary. the hyperbolic anomaly is also
* limited. the hyperbolic sine is used because it's not double valued. * limited. the hyperbolic sine is used because it's not double valued.
* *
* author : david vallado 719-573-2600 27 may 200 2 * author : david vallado 719-573-2600 27 may 200 2
* *
* revisions * revisions
* vallado - fix small 24 sep 200 2 * vallado - fix small 24 sep 200 2
* *
* inputs description range / units * inputs description range / units
* ecc - eccentricity 0.0 to * ecc - eccentricity 0.0 to
* nu - true anomaly -2pi to 2pi rad * nu - true anomaly -2pi to 2pi rad
* *
* outputs : * outputs :
* e0 - eccentric anomaly 0.0 to 2pi rad 153 * e0 - eccentric anomaly 0.0 to 2pi rad 153
.02 .02 degree
* m - mean anomaly 0.0 to 2pi rad 151 * m - mean anomaly 0.0 to 2pi rad 151
.7425 .7425 degree
* *
* locals : * locals :
* e1 - eccentric anomaly, next value rad * e1 - eccentric anomaly, next value rad
* sine - sine of e * sine - sine of e
* cose - cosine of e * cose - cosine of e
* ktr - index * ktr - index
* *
* coupling : * coupling :
* asinh - arc hyperbolic sine * asinh - arc hyperbolic sine
* *
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