Next: , Previous: , Up: Internal Routines   [Contents][Index]

15.5.75 c2txy

c2txy(jdtt, x, y, xp, yp)

[SOFA] Returns the celestial-to-terrestrial matrix given the TT Julian Date jd, the CIP coordinates x, y (the x,y components of the unit vector in the Geocentric Celestial Reference System), and the polar coordinates xp, yp (the coordinates in radians of the Celestial Intermediate Pole with respect to the International Terestrial Reference System, measured along the meridians to 0 and 90 degrees west, respectively). All of the arguments must have the same dimensions. The result has those same dimensions, but with two dimensions equal to 3 prefixed.

See also: Astronomical Coordinate Calculations