libnova  v 0.16.0
parallax.h
1 /*
2  * This library is free software; you can redistribute it and/or
3  * modify it under the terms of the GNU Lesser General Public
4  * License as published by the Free Software Foundation; either
5  * version 2 of the License, or (at your option) any later version.
6  *
7  * This library is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
10  * Lesser General Public License for more details.
11  *
12  * You should have received a copy of the GNU General Public License
13  * along with this program; if not, write to the Free Software
14  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
15  *
16  * Copyright (C) 2000 - 2005 Petr Kubanek
17  */
18 
19 #ifndef _LN_PARALLAX_H
20 #define _LN_PARALLAX_H
21 
22 #include <libnova/ln_types.h>
23 
24 #ifdef __cplusplus
25 extern "C" {
26 #endif
27 
32 void LIBNOVA_EXPORT ln_get_parallax(struct ln_equ_posn *object,
33  double au_distance, struct ln_lnlat_posn *observer, double height,
34  double JD, struct ln_equ_posn *parallax);
35 
40 void LIBNOVA_EXPORT ln_get_parallax_ha(struct ln_equ_posn *object,
41  double au_distance, struct ln_lnlat_posn *observer, double height,
42  double H, struct ln_equ_posn *parallax);
43 
44 #ifdef __cplusplus
45 };
46 #endif
47 
48 #endif
ln_lnlat_posn::lng
double lng
Definition: ln_types.h:205
ln_get_apparent_sidereal_time
double LIBNOVA_EXPORT ln_get_apparent_sidereal_time(double JD)
Calculate apparent sidereal time from date.
Definition: sidereal_time.c:62
ln_equ_posn::ra
double ra
Definition: ln_types.h:177
ln_deg_to_rad
double LIBNOVA_EXPORT ln_deg_to_rad(double degrees)
degrees to radians
Definition: utility.c:93
ln_lnlat_posn::lat
double lat
Definition: ln_types.h:206
ln_get_earth_centre_dist
void ln_get_earth_centre_dist(float height, double latitude, double *p_sin_o, double *p_cos_o)
Calculate Earth globe centre distance.
Definition: earth.c:2793
ln_rad_to_deg
double LIBNOVA_EXPORT ln_rad_to_deg(double radians)
radians to degrees
Definition: utility.c:87
ln_lnlat_posn
Ecliptical (or celestial) Longitude and Latitude.
Definition: ln_types.h:204
ln_equ_posn
Equatorial Coordinates.
Definition: ln_types.h:176
ln_equ_posn::dec
double dec
Definition: ln_types.h:178