sgp4ext.cpp | sgp4ext.cpp | |||
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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 | |||

* | * | |||

End of changes. 2 change blocks. | ||||

5 lines changed or deleted | | 5 lines changed or added | ||

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