Celestial object's place on the sky; contains the output from place(). More...

#include <novas.h>

Public Attributes
double	dec
	[deg] apparent, topocentric, or astrometric declination (degrees)
double	dis
	[AU] true (geometric, Euclidian) distance to solar system body or 0.0 for star (AU)
double	r_hat [3]
	unit vector toward object (dimensionless)
double	ra
	[h] apparent, topocentric, or astrometric right ascension (hours)
double	rv
	[km/s] radial velocity (km/s).

Detailed Description

Celestial object's place on the sky; contains the output from place().

See also: novas_sky_pos(), novas_transform_sky_pos(), SKY_POS_INIT

Member Data Documentation

◆ dec

double novas_sky_pos::dec

[deg] apparent, topocentric, or astrometric declination (degrees)

Referenced by novas_equ_track(), novas_hor_track(), novas_object_sep(), novas_transform_sky_pos(), radec_planet(), radec_star(), and supernovas::Horizontal::to_apparent().

◆ dis

double novas_sky_pos::dis

[AU] true (geometric, Euclidian) distance to solar system body or 0.0 for star (AU)

Referenced by novas_equ_track(), novas_hor_track(), novas_object_sep(), radec_planet(), and supernovas::Horizontal::to_apparent().

◆ r_hat

double novas_sky_pos::r_hat[3]

unit vector toward object (dimensionless)

Referenced by novas_transform_sky_pos(), and supernovas::Horizontal::to_apparent().

◆ ra

double novas_sky_pos::ra

[h] apparent, topocentric, or astrometric right ascension (hours)

Referenced by novas_equ_track(), novas_hor_track(), novas_object_sep(), novas_transform_sky_pos(), radec_planet(), radec_star(), and supernovas::Horizontal::to_apparent().

◆ rv

double novas_sky_pos::rv

[km/s] radial velocity (km/s).

As of SuperNOVAS v1.3, this is always a proper observer-based spectroscopic velocity measure, which relates the observed wavelength to the rest wavelength as λ_obs = (1 + rv / c) λ_rest. novas_ssb_to_lsr_vel(), novas_v2z()

Referenced by novas_equ_track(), novas_hor_track(), radec_planet(), radec_star(), and supernovas::Horizontal::to_apparent().