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authorJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
committerJoseph Hunkeler <jhunkeler@gmail.com>2015-07-08 20:46:52 -0400
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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