astron.h - assorted definitions useful for astronomy More...

Macros
#define	MJD_B1900 15019.81352
	MJD of Besselian std epoch B1900.0.

#define	MJD_B1950 33281.92346
	MJD of Besselian std epoch B1950.0.

#define	MJD_J2000 51544.5
	MJD of Fundamental Epoch J2000.0.

#define	TROP_CENT 36524.2198781
	Length of Tropical Century in days.

#define	JUL_CENT 36525.0
	Length of Julian Century in days.

#define	ARCSEC2RAD (PI / 648000.0)
	arcseconds to radians

#define	RAD2ARCSEC (648000.0 / PI)
	radians to arcseconds

#define	SEC2RAD (PI / 43200.0)
	seconds(time) to radians

#define	RAD2SEC (43200.0 / PI)
	radians to seconds(time)

#define	HRS2RAD (PI / 12.0)
	hours to radians

#define	RAD2HRS (12.0 / PI)
	radians to hours

Functions
static double	arcsecToRad (double angle_as)
	Returns angle_as converted from arcseconds to radians.

static double	radToArcsec (double angle_rad)
	Returns angle_rad converted from radians to arcseconds.

static double	secToRad (double angle_s)
	Returns angle_s converted from seconds to radians.

static double	radToSec (double angle_rad)
	Returns angle_rad converted from radians to seconds.

static double	hrsToRad (double angle_h)
	Returns angle_h converted from hours to radians.

static double	radToHrs (double angle_rad)
	Returns angle_rad converted from radians to hours.

Detailed Description

astron.h - assorted definitions useful for astronomy

Some astronomical constants, and angle conversions that are used in astronomical software.

Definition in file astron.h.

Macros