22#include <libnova/ln_types.h>
24#define LN_SOLAR_STANDART_HORIZON -0.8333
25#define LN_SOLAR_CIVIL_HORIZON -6.0
26#define LN_SOLAR_NAUTIC_HORIZON -12.0
27#define LN_SOLAR_ASTRONOMICAL_HORIZON -18.0
void LIBNOVA_EXPORT ln_get_solar_equ_coords(double JD, struct ln_equ_posn *position)
Calculate apparent equatorial coordinates.
Definition: solar.c:56
int LIBNOVA_EXPORT ln_get_solar_rst_horizon(double JD, struct ln_lnlat_posn *observer, double horizon, struct ln_rst_time *rst)
Return solar rise/set time over local horizon (specified in degrees).
Definition: solar.c:129
void LIBNOVA_EXPORT ln_get_solar_geo_coords(double JD, struct ln_rect_posn *position)
Calculate geocentric coordinates (rectangular)
Definition: solar.c:116
void LIBNOVA_EXPORT ln_get_solar_geom_coords(double JD, struct ln_helio_posn *position)
Calculate solar geometric coordinates.
Definition: solar.c:39
int LIBNOVA_EXPORT ln_get_solar_rst(double JD, struct ln_lnlat_posn *observer, struct ln_rst_time *rst)
Calculate the time of rise, set and transit for the Sun.
Definition: solar.c:139
double LIBNOVA_EXPORT ln_get_solar_sdiam(double JD)
Calculate the semidiameter of the Sun in arc seconds.
Definition: solar.c:151
void LIBNOVA_EXPORT ln_get_solar_ecl_coords(double JD, struct ln_lnlat_posn *position)
Calculate apparent ecliptical coordinates.
Definition: solar.c:87
Equatorial Coordinates.
Definition: ln_types.h:171
Heliocentric position.
Definition: ln_types.h:217
Ecliptical (or celestial) Longitude and Latitude.
Definition: ln_types.h:201
Rectangular coordinates.
Definition: ln_types.h:238
Rise, Set and Transit times.
Definition: ln_types.h:318