1238A Nancy Grace Roman ADC/SSDOO Francois Ochsenbein CDS 2001-08-11 We thank Dr. Van Altena for sending us the electronic version of the catalog and thank, particularly, Dr. John T. Lee for extensive help in providing the necessary additional information. Nancy G. Roman ADC/SSDOO 1996-11-14 CDS staff CDS 11 rue de l'Université 67000 Strasbourg France 2001-08-10 to CDS. The file "errata.dat" is a direct derivation of "correct.htm", and the flag in column 1 of the file "picat.dat" was added to the stars appearing in the errata.]]> ADC staff ADC Code 630, Goddard Space Flight Center/NASA 20771 Greenbelt Maryland United States of America 2002-03-11 UMd-ADC staff UMd Astronomical Data Center Department of Astronomy, University of Maryland 20742 College Park Maryland United States of America thomas@astro.umd.edu http://archive.astro.umd.edu/archive 2005-09-30T05:03:31-04:00 The General Catalogue of Trigonometric Stellar Parallaxes, Fourth Edition of this catalog was previously archived in the Astronomical Data Centers and was included on the first ADC CD-ROM. In this final version the authors have revised the weighting system, and included newly published parallaxes, photometry and spectral types for most of the stars. The weighted mean parallaxes of many stars will be found to differ from those in the preliminary version due to changes in the weighting system, revisions to the default reference star magnitudes and the addition of new parallaxes.]]> Van W F Altena J T Lee E D Hoffleit Yale University Observatory 1995-??-?? 1995GCTP..C......0V 1238A_picat 1.00 5822.00 00 00 12.7 23 59 54.0 RAhms LST yr 1900.0 3 false -87 01 22 +89 26 00 DEdms -1.46 21.51 mag -0.40 +4.25 mag -1.35 +6.70 mag 01 9107 0.000 10.310 arcsec yr 0 360 deg -0.0491 +0.7698 arcsec 004 710 mas 1 20 1238A_source 1238A_errata 4.00 5813.10