Based on observations collected at the National Astronomical Observatory Rozhen, Bulgaria.

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This work is part of a common project between the Universitätssternwarte Bonn, Germany, and the Institute of Astronomy of the Bulgarian Academy of Sciences to study binary open star clusters and clusters in the direction of the Galactic anticentre.

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...

Full Table 4 is only available in electronic form at the CDS via anonymous ftp to cdsarc.u-strasbg.fr (130.79.128.5) or via
http://cdsweb.u-strasbg.fr/cgi-bin/qcat?J/A+A/376/745

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