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Showing content from https://smithsonian.github.io/SuperNOVAS/apidoc/html/structsky__pos.html below:

SuperNOVAS: sky_pos Struct Reference

#include <novas.h>

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

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

See also: place(); SKY_POS_INIT; novas_z_lsr()

◆ 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.

The documentation for this struct was generated from the following file:

include/novas.h

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