void eraC2txy	(	double	tta,
		double	ttb,
		double	uta,
		double	utb,
		double	x,
		double	y,
		double	xp,
		double	yp,
		double	rc2t[3][3]
	)

Definition at line 3 of file c2txy.c.

References eraC2ixy(), eraC2tcio(), eraEra00(), eraPom00(), and eraSp00().

Referenced by t_c2txy().

{
   double rc2i[3][3], era, sp, rpom[3][3];

/* Form the celestial-to-intermediate matrix for this TT. */
   eraC2ixy(tta, ttb, x, y, rc2i);

/* Predict the Earth rotation angle for this UT1. */
   era = eraEra00(uta, utb);

/* Estimate s'. */
   sp = eraSp00(tta, ttb);

/* Form the polar motion matrix. */
   eraPom00(xp, yp, sp, rpom);

/* Combine to form the celestial-to-terrestrial matrix. */
   eraC2tcio(rc2i, era, rpom, rc2t);

   return;

}

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