Function astro::precess::precess_eq_coords_FK5 [−] [src]

pub fn precess_eq_coords_FK5(
    old_asc: f64, 
    old_dec: f64, 
    JD1: f64, 
    JD2: f64
) -> (f64, f64)

Computes equatorial coordinates, from coordinates referred to the FK4 system, reduced to a different epoch

Returns

(new_asc, new_dec)

  • new_asc: Right ascension in the new epoch | in radians
  • new_dec: Declination in the new epoch | in radians

Arguments

  • old_asc: Right ascension in the old epoch | in radians, referred to the FK4 system
  • old_dec: Declination for in old epoch | in radians, referred to the FK4 system
  • JD1 : Julian (Ephemeris) day corresponding to the old epoch
  • JD2 : Julian (Ephemeris) day corresponding to the new epoch