19#ifndef _LN_PROPER_MOTION_H
20#define _LN_PROPER_MOTION_H
22#include <libnova/ln_types.h>
48void LIBNOVA_EXPORT ln_get_equ_pm_epoch (
struct ln_equ_posn * mean_position,
struct ln_equ_posn * proper_motion,
double JD,
double epoch_JD,
struct ln_equ_posn * position);
Equatorial Coordinates.
Definition ln_types.h:171