sun_geometry.h

/* 
 * File:       sun_geometry.h
 * Author:     Peter Thornton
 * Purpose:    Calculate sun position in ECI and sat-earth-sun angle
 * Created on: 7 February 2021 
 */

// function prototypes 
void sun_ECI(double jd, double *sunx_eci, double *suny_eci, double *sunz_eci);