/ftp/cats/I/175



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I/175     Fifth Fundamental Catalogue (FK5) - Extension     (Fricke+ 1991)
The following files can be converted to FITS (extension .fit .fit.Z .fgz)
	fk5e.dat
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Query from: http://vizier.cds.unistra.fr/cgi-bin/VizieR?-source=I/175
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drwxr-xr-x 317 cats archive 8192 Feb 28 11:16 [Up] drwxr-xr-x 2 cats archive 242 Nov 13 15:13 [TAR file] -rw-r--r-- 1 cats archive 454 Dec 19 2022 .message -r--r--r-- 1 cats archive 11749 Jan 27 1998 ReadMe -rw-r--r-- 1 cats archive 719 Sep 19 2007 +footg5.gif -rw-r--r-- 1 cats archive 12546 Mar 5 2008 +footg8.gif -r--r--r-- 1 cats archive 200475 Mar 26 1996 fk5e.dat.gz [txt] [txt.gz] [fits] [fits.gz] [html]
Beginning of ReadMe : I/175 Fifth Fundamental Catalogue (FK5) - Extension (Fricke+ 1991) ================================================================================ Fifth Fundamental Catalogue (FK5) Part II. The FK5 Extension Fricke W., Schwan H., CorbinT. (in collaboration with Bastian U., Bien R., Cole C., Jackson R., Jaehrling R., Jahreiss H., Lederle T., Roeser, S.) <Veroeff. Astron. Rechen-Institut Heidelb. No. 33, (1991)> =1991VeARI..33....1F ================================================================================ ADC_Keywords: Positional data - 140; Proper motions - 665; Description: The FK5 Extension provides improved mean positions and proper motions for the 3117 new fundamental stars. The machine version of the catalog contains the positions and proper motions of the Extension stars for the epochs and equinoxes J2000.0 and B1950.0, the mean epochs of individual observed right ascensions and declinations used to determine the final positions, the mean errors of the final positions and proper motions for the reported epochs, and ancillary data such as magnitudes, spectral types, parallaxes, and radial velocities. Cross identifications to the numbering systems of the AGK3R, SRS, HD, DM, and GC catalogs are also included. Introduction: The Fifth Fundamental Catalogue (FK5) Part II (which may be referred to by the alternate name FK5 Extension) provides mean positions and proper motions at equinox and epoch J2000.0 for 3117 new fundamental stars. The purpose of the FK5, Part II, is mainly to extend the fundamental system defined by the FK5, Part I (the so-called Basic FK5; Fricke et al. 1988) to about magnitude 9.5. The positions and proper motions given in the FK5 Extension are in accordance with the IAU (1976) system of astronomical constants; this means that the proper motions are based on the new values for the precessional quantities, the terms of elliptic aberration are eliminated from the mean positions, the correction for the error in the FK4 equinox and its fictitious motion are applied, and the systematic corrections FK5-FK4, as given in the Basic FK5 (page 86), have been taken into account. More than 200 catalogs providing star positions obtained from throughout the world have been used in the compilation of the FK5 Extension. The source reference should be consulted, along with the FK5 Basic catalog (Fricke et al. 1988) for more detailed information regarding the motivation for construction of the FK5, the determination of its equator and equinox, the expressions for general precession, a discussion of the FK5 system, systematic differences between the FK4 and FK5, the transformation of observational catalogs to the FK5 system and to the reference system J2000.0, and more thorough descriptions of the data contained in the FK5 catalog. In fact, the source reference should be consulted by all users before utilizing the FK5 data for astrometric applications. The trigonometric parallax and radial velocity fields are blank when data are missing, and because parallax and radial velocity can validly be zero, the fields should be checked for blanks before the data are used. The user should note that the file is ordered by FK5 number, which means that the stars are arranged neither by right ascension nor by declination. See also: I/149 : Part I: Basic Fundamental Stars