Description
The previous compilation of UBV data (Mermilliod 1986a,b,c) contains the UBV photoelectric observations published between 1953 and 1986. The present supplement adds the data published between 1986 and the end of 1992 which represent 25639 new UBV data. The corresponding references were numbered in continuation of the main catalogue and go from number 1603 to 1784. See <http://obswww.unige.ch/gcpd/ph01.html> for a description of the UBV photoemtric system.
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