From fa080de7afc95aa1c19a6e6fc0e0708ced2eadc4 Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Wed, 8 Jul 2015 20:46:52 -0400
Subject: Initial commit

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 math/slalib/doc/addet.hlp | 42 ++++++++++++++++++++++++++++++++++++++++++
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+.help addet Jun99 "Slalib Package"
+.nf
+
+      SUBROUTINE slADET (RM, DM, EQ, RC, DC)
+
+     - - - - - -
+      A D E T
+     - - - - - -
+
+  Add the E-terms (elliptic component of annual aberration)
+  to a pre IAU 1976 mean place to conform to the old
+  catalogue convention (double precision)
+
+  Given:
+     RM,DM     dp     RA,Dec (radians) without E-terms
+     EQ        dp     Besselian epoch of mean equator and equinox
+
+  Returned:
+     RC,DC     dp     RA,Dec (radians) with E-terms included
+
+  Note:
+
+     Most star positions from pre-1984 optical catalogues (or
+     derived from astrometry using such stars) embody the
+     E-terms.  If it is necessary to convert a formal mean
+     place (for example a pulsar timing position) to one
+     consistent with such a star catalogue, then the RA,Dec
+     should be adjusted using this routine.
+
+  Reference:
+     Explanatory Supplement to the Astronomical Ephemeris,
+     section 2D, page 48.
+
+  Called:  slETRM, slDS2C, slDC2S, slDA2P, slDA1P
+
+  P.T.Wallace   Starlink   18 March 1999
+
+  Copyright (C) 1999 Rutherford Appleton Laboratory
+  Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.
+
+.fi
+.endhelp
-- 
cgit 

