Function astro::sun::geocent_rect_coords [−] [src]

pub fn geocent_rect_coords(sun_geo_long: f64, sun_geo_lat: f64, sun_rad_vec: f64, mn_oblq: f64) -> (f64, f64, f64)

Computes the Sun's geocentric rectangular coordinates, referred to the mean equinox of the date

Returns

(x, y z)

x: The X coordinate | in AU
y: The Y coordinate | in AU
z: The Z coordinate | in AU
The positive x-axis is directed towards the Earth's vernal equinox (0 degrees longitude)
The positive y-axis lies in the plane of the Earth's equator and is directed towards 90 degrees longitude
The positive z-axis is directed towards the Earth's northern celestial pole

Arguments

sun_geo_long: The Sun's geometric longitude | in radians, without corrections for nutation and abberation
sun_geo_lat : The Sun's geometric latitude | in radians, without corrections for nutation and abberation
sun_rad_vec : The Sun's geometric radius vector | in AU
mn_oblq : Mean obliquity of the ecliptic

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