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[vsnet-id 594] Improved coordinates revisited

     The variable-star positions Mike Simonsen sent earlier today were not
quoted from astrometric catalogues, and are often several arcsec in error.
There were also a few typos.  Here is a revised list with all positions 
at ~0".1 precision and accuracy from Tycho-2 (source T in column 's') or
the Bordeaux meridian circle (source B).  Since most of the stars are in
Tycho-1, these already have good positions in SIMBAD.  It seems as though
W Crv has gone on "forever" without having its position fixed---no wonder
it hasn't received the study it deserves!
     In the field of AM Tau, 1' north is another eclipser, V726 Tau.  
I verified its position using the discovery chart as indicated below.
     DH Hya has an incorrect position in SIMBAD, where it is switched with
a much fainter blue star nearby, again verifiable using the source chart.
I will send a note to the SIMBAD folks to get this straightened out.

\Brian

P.S.:  The improved position for WX CMi that Mike supplied from Arne Henden
is also better than the GSC-2.2 position I gave earlier since the influence
of the close companion is reduced.  That should be the preferred position
for the star.

------------------------------------------------------------------------------

GCVS          RA   (2000)   Dec    s    GSC      remarks
SS Cet      2 48 36.28 +01 48 26.9 T 0047-0511 
W Crv      12 07 34.36 -13 08 59.0 T 5525-0352   SIMBAD approx
V387 Cyg   21 15 37.36 +37 29 51.7 T 2714-0556
YY Del     20 30 00.84 +14 03 09.4 B 1099-0369   Simonsen 10" off in Dec
FL Ori      5 07 46.65 -02 44 38.3 T 4755-1282   NE component of 30" pair
BO Mon      7 59 50.14 -03 28 36.7 T 4837-1454   SIMBAD approx
SX Oph     16 17 55.50 -06 39 52.2 T 5046-0419
AC Tau      4 37 06.36 +01 41 31.3 T 0082-0147
AM Tau      5 52 21.38 +16 17 00.8 B 1312-2166   SIMBAD approx
V726 Tau    5 52 21.46 +16 17 54.8 B 1312-2150   SIMBAD approx;
                                                 chart:  1976AcA....26...25S

AV Peg     21 52 02.80 +22 34 29.3 T 2202-1379
DY Her     16 31 17.96 +11 59 52.4 B 0968-1567
DH Hya      9 00 14.82 -09 46 44.2 T 5448-0107   chart:  1930AN....240..193H

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