double eraObl06	(	double	date1,
		double	date2
	)

Definition at line 3 of file obl06.c.

References ERFA_DAS2R, ERFA_DJ00, ERFA_DJC, and t.

Referenced by eraNum06a(), eraP06e(), eraPfw06(), palEcmat(), palNutc(), and t_obl06().

{
   double t, eps0;

/* Interval between fundamental date J2000.0 and given date (JC). */
   t = ((date1 - ERFA_DJ00) + date2) / ERFA_DJC;

/* Mean obliquity. */
   eps0 = (84381.406     +
          (-46.836769    +
          ( -0.0001831   +
          (  0.00200340  +
          ( -0.000000576 +
          ( -0.0000000434) * t) * t) * t) * t) * t) * ERFA_DAS2R;

   return eps0;

}

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