Subversion Repositories planix.SVN

#include "astro.h"

void

jup(void)

{

	double pturbl, pturbb, pturbr;

	double lograd;

	double dele, enom, vnom, nd, sl;

	ecc = .0483376 + 163.e-6*capt;

	incl = 1.308660 - .0055*capt;

	node = 99.43785 + 1.011*capt;

	argp = 12.71165 + 1.611*capt;

	mrad = 5.202803;

	anom = 225.22165 + .0830912*eday - .0484*capt;

	motion = 299.1284/3600.;

	anom = anom;

	incl *= radian;

	node *= radian;

	argp *= radian;

	anom = fmod(anom,360.)*radian;

	enom = anom + ecc*sin(anom);

	do {

		dele = (anom - enom + ecc * sin(enom)) /

			(1. - ecc*cos(enom));

		enom += dele;

	} while(fabs(dele) > converge);

	vnom = 2.*atan2(sqrt((1.+ecc)/(1.-ecc))*sin(enom/2.),

		cos(enom/2.));

	rad = mrad*(1. - ecc*cos(enom));

	lambda = vnom + argp;

	pturbl = 0.;

	lambda += pturbl*radsec;

	pturbb = 0.;

	pturbr = 0.;

/*

 *	reduce to the ecliptic

 */

	nd = lambda - node;

	lambda = node + atan2(sin(nd)*cos(incl),cos(nd));

	sl = sin(incl)*sin(nd) + pturbb*radsec;

	beta = atan2(sl, pyth(sl));

	lograd = pturbr*2.30258509;

	rad *= 1. + lograd;

	lambda += 555.*radsec;

	beta -= 51.*radsec;

	motion *= radian*mrad*mrad/(rad*rad);

	semi = 98.47;

	mag = -8.93;

	helio();

	geo();

}