Since 1970, we have been compiling the published photoelectric data in
many photometric systems and in particular the 
system. The
previous version was completed in 1989 (Hauck & Mermilliod 1990) and
many new data have been published during the past years. Thus we have updated
the catalogue, which is, like the previous one, constitued of two parts.
First, we have maintained all the data published; thus it perfectly reflects the
literature data, and it is possible to retrieve easily the data
published by one or a group of authors. Nevertheless, on many occasions only one
value per star is needed, i.e. the best average value, and this is why we have
made a critical evaluation of the compiled data in order to publish a second
part of the catalogue which contains the homogeneous data for 63313 stars.
Both parts are available in machine-readable form from the Strasbourg Data Center, but an access is also provided by our World Wide Web service at http://obswww.unige.ch/gcpd/ (Mermilliod et al. 1997).