converts the sun from barycentric to geocentric, * the earth from barycentric to heliocentric * computes * apparent position, * precessio

converts from polar coordinates of ecliptic of date * to cartesian coordinates of equator 2000 * tjd date * x array of position

* Function calculates a correction for ayanamsha if the ayanamsha was * defined using a different precession model than our standard one. * This all

function for inhouse testing only */

* attr[]: see swe_lun_eclipse_how() * * dcore[0]: distance of shadow axis from geocenter r0 * dcore[1]: diameter of core shadow on fundamental

computes a main planet from any ephemeris, if it * has not yet been computed for this date. * since a geocentric position requires the earth, the

calculates the nutation matrix * nu pointer to nutation data structure * oe pointer to epsilon data structure */

* swe_azalt_rev() * computes either ecliptical or equatorial coordinates from * azimuth and true altitude in degrees. * For conversion between t

Function calculates osculating orbital elements (Kepler elements) of a planet * or asteroid or the Earth-Moon barycentre. * The function returns

Computes attributes of a lunar eclipse for given tjd and geopos * * retflag SE_ECL_TOTAL or SE_ECL_PARTIAL * SE_ECL_PENUMBRAL *

swe_refrac_extended() * * This function was created thanks to and with the help of the * archaeoastronomer Victor Reijs. * It is more correct

computes nutation, if it is wanted and has not yet been computed. * if speed flag has been turned on since last computation, * nutation is recomput

Moshier's moom * tjd julian day * xpm array of 6 doubles for moon's position and speed vectors * serr pointer to error string */

Calculate geometric coordinates of Moon * without light time or nutation correction. */