Function astro::precess::precess_ecl_coords [−] [src]

pub fn precess_ecl_coords(old_long: f64, old_lat: f64, JD_old: f64, JD_new: f64) -> (f64, f64)

Computes ecliptic coordinates reduced to a different epoch

Returns

(new_long, new_lat)

new_long: Ecliptic longitude in the new epoch | in radians
new_lat : Ecliptic latitude in the new epoch | in radians

Arguments

old_long: Ecliptic longitude in the old epoch | in radians
old_lat : Ecliptic latitude in the old epoch | in radians
JD_old : Julian (Ephemeris) day corresponding to the old epoch
JD_new : Julian (Ephemeris) day corresponding to the new epoch

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