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slalib/epb.f

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+      DOUBLE PRECISION FUNCTION sla_EPB (DATE)
+*+
+*     - - - -
+*      E P B
+*     - - - -
+*
+*  Conversion of Modified Julian Date to Besselian Epoch
+*  (double precision)
+*
+*  Given:
+*     DATE     dp       Modified Julian Date (JD - 2400000.5)
+*
+*  The result is the Besselian Epoch.
+*
+*  Reference:
+*     Lieske,J.H., 1979. Astron.Astrophys.,73,282.
+*
+*  P.T.Wallace   Starlink   February 1984
+*
+*  Copyright (C) 1995 Rutherford Appleton Laboratory
+*
+*  License:
+*    This program is free software; you can redistribute it and/or modify
+*    it under the terms of the GNU General Public License as published by
+*    the Free Software Foundation; either version 2 of the License, or
+*    (at your option) any later version.
+*
+*    This program is distributed in the hope that it will be useful,
+*    but WITHOUT ANY WARRANTY; without even the implied warranty of
+*    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+*    GNU General Public License for more details.
+*
+*    You should have received a copy of the GNU General Public License
+*    along with this program (see SLA_CONDITIONS); if not, write to the 
+*    Free Software Foundation, Inc., 59 Temple Place, Suite 330, 
+*    Boston, MA  02111-1307  USA
+*
+*-
+
+      IMPLICIT NONE
+
+      DOUBLE PRECISION DATE
+
+
+      sla_EPB = 1900D0 + (DATE-15019.81352D0)/365.242198781D0
+
+      END