GPM1 - a catalog of absolute proper motions of stars with respect to galaxies^*

Main Astronomical Observatory of National Academy of Sciences, Goloseevo, DSP-650, Kiev-22, Ukraine

Send offprint request to: S.P. Rybka

Received: 4 July 1995
Accepted: 14 March 1996

Abstract

The description of the first version of the General Compiled Catalogue of Absolute Proper Motions (GPM1) for a sample of stars, derived with respect to galaxies within the plan called Catalogue of Faint Stars (KSZ, Deutch 1952), is presented. The principal aim of the GPM1 construction was to provide absolute proper motions of stars to determine the rotation of the HIPPARCOS system. The GPM1 catalogue contains 977 Input Catalogue stars with V magnitudes in 180 fields north of -25 degrees of declination. The accuracy of the proper motions is 8 mas/yr (milliarcseconds per year). Comparison of proper motions of GPM1 with those of the PPM and ACRS was performed and analyzed with respect to systematic errors caused by spurious rotation of the FK5 system. The standard errors show that the rotation may be determined with an accuracy better than 1 mas/yr.