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15.5.275 gd2gc

gd2gc(ellid, eph)

[SOFA] Returns geocentric coordinates (x, y, z) in meters corresponding to geodetic coordinates eph (east longitude in radians, north latitude in radians, height in meters) for the specified reference ellipsoid ellid (1 = wgs84, 2 = grs80, 3 = wgs72). eph must have 3 elements in its first dimension, and ellid must have a single element. The result has the same dimensions as eph.

See also: Astronomical Coordinate Calculations