19#ifndef _LN_PRECESSION_H
20#define _LN_PRECESSION_H
22#include <libnova/ln_types.h>
void LIBNOVA_EXPORT ln_get_equ_prec(struct ln_equ_posn *mean_position, double JD, struct ln_equ_posn *position)
Calculate the effects of precession on equatorial coordinates, convert current to J2000.
Definition: precession.c:64
void LIBNOVA_EXPORT ln_get_equ_prec2(struct ln_equ_posn *mean_position, double fromJD, double toJD, struct ln_equ_posn *position)
Calculate the effects of precession on equatorial coordinates, between arbitary Jxxxx epochs.
Definition: precession.c:119
void LIBNOVA_EXPORT ln_get_ecl_prec(struct ln_lnlat_posn *mean_position, double JD, struct ln_lnlat_posn *position)
Calculate the effects of precession on ecliptical coordinates.
Definition: precession.c:177
Equatorial Coordinates.
Definition: ln_types.h:171
Ecliptical (or celestial) Longitude and Latitude.
Definition: ln_types.h:201