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c2ixy(jdtt, x, y)
[SOFA] Returns the celestial-to-intermediate-frame-of-date matrix for
TT Julian Dates jdtt and Celestial Intermediate Pole
coordinates x and y (components of the unit
vector in the Geocentric Celestial Reference System), for IAU 2000
models. jdtt may be a numerical scalar or array. The
dimensions of rbpn must be equal to those of
jdtt but with two dimensions equal to 3 prefixed. The
returned array has the same dimensions as rbpn.
See also: c2ixys, Astronomical Coordinate Calculations