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15.5.154 ee00

ee00(jdtt, epsa, dpsi)

[SOFA] Returns the equation of the equinoxes (IAU 2000) given the TT Julian Date jdtt, the mean obliquity epsa (radians, mean of date), and the nutation in longitude epsa (in radians). All three parameters must have the same dimensions. The returned value has those same dimensions, too, and is measured in radians.

Greenwich apparent sidereal time (gast) is equal to Greenwish mean sidereal time (gmst) plus the equation of the equinoxes.

See also: Astronomical Coordinate Calculations