19 #ifndef _LN_PARALLAX_H
20 #define _LN_PARALLAX_H
22 #include <libnova/ln_types.h>
32 void LIBNOVA_EXPORT ln_get_parallax (
struct ln_equ_posn *
object,
double au_distance,
struct ln_lnlat_posn * observer,
double height,
double JD,
struct ln_equ_posn * parallax);
38 void LIBNOVA_EXPORT ln_get_parallax_ha (
struct ln_equ_posn *
object,
double au_distance,
struct ln_lnlat_posn * observer,
double height,
double H,
struct ln_equ_posn * parallax);
double lng
Definition: ln_types.h:202
double LIBNOVA_EXPORT ln_get_apparent_sidereal_time(double JD)
Calculate apparent sidereal time from date.
Definition: sidereal_time.c:61
double ra
Definition: ln_types.h:172
double LIBNOVA_EXPORT ln_deg_to_rad(double degrees)
degrees to radians
Definition: utility.c:90
double lat
Definition: ln_types.h:203
double LIBNOVA_EXPORT ln_rad_to_deg(double radians)
radians to degrees
Definition: utility.c:84
Ecliptical (or celestial) Longitude and Latitude.
Definition: ln_types.h:201
Equatorial Coordinates.
Definition: ln_types.h:171
double dec
Definition: ln_types.h:173