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15.5.244 fk5hz

fk5hz, ra5, dec5, jdtdb, rah, dech

[SOFA] Transforms an FK5 (J2000.0) star position (right ascension ra5 in radians, declination dec5 in radians) determined at TDB Julian Date jdtdb into the system of the Hipparcos catalog, assuming zero Hipparcos proper motion. The returned coordinates in the Hipparcos system are right ascension rah and declination dech, both measured in radians. All input and output variables (must) have the same dimensions.

See also: Astronomical Coordinate Calculations