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15.5.403 nutm80


[SOFA] Returns the nutation matrix for TDB Julian Date jdtdb, according to the IAU 1980 model. The result has the same dimensions as jdtdb with two extra dimensions equal to 3 prefixed. The returned matrix m can be used as follows: v(true) = m v(mean) where p-vector v(true) is with respect to the true equatorial triad of date and the p-vector v(mean) is with respect to the mean equatorial triad of date.

See also: Astronomical Coordinate Calculations