Two-colour photometry for 9473 components of close Hipparcos double and multiple stars

Using observations obtained with the Tycho instrument of the ESA Hipparcos satellite, a two-colour photometry is produced for components of more than 7 000 Hipparcos double and multiple stars with angular separations 0.1 to 2 .5 arcsec. We publish 9473 components of 5173 systems with separations abov e 0.3 arcsec. The majority of them did not have Tycho photometry in the Hip parcos catalogue. The magnitudes are derived in the Tycho B-T and V-T passb ands, similar to the Johnson passbands. Photometrically resolved components of the binaries with statistically significant trigonometric parallaxes ca n be put on an HR diagram, the majority of them for the first time.