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.help subet Jun99 "Slalib Package"
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SUBROUTINE slSUET (RC, DC, EQ, RM, DM)
- - - - - -
S U E T
- - - - - -
Remove the E-terms (elliptic component of annual aberration)
from a pre IAU 1976 catalogue RA,Dec to give a mean place
(double precision)
Given:
RC,DC dp RA,Dec (radians) with E-terms included
EQ dp Besselian epoch of mean equator and equinox
Returned:
RM,DM dp RA,Dec (radians) without E-terms
Called:
slETRM, slDS2C, sla_,DVDV, slDC2S, slDA2P
Explanation:
Most star positions from pre-1984 optical catalogues (or
derived from astrometry using such stars) embody the
E-terms. This routine converts such a position to a
formal mean place (allowing, for example, comparison with a
pulsar timing position).
Reference:
Explanatory Supplement to the Astronomical Ephemeris,
section 2D, page 48.
P.T.Wallace Starlink 10 May 1990
Copyright (C) 1995 Rutherford Appleton Laboratory
Copyright (C) 1995 Association of Universities for Research in Astronomy Inc.
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