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The catalog is an up-to-date compilation of the observed projected rotational velocities, Vrotsin i, for over 11000 stars of all spectral types and luminosity classes. Table 1 contains individual Vrotsin i data, together with the errors and the methods of determination. The bibliographic references are provided in Table 2. Tables 1 and 2 are available only in electronic version.
The space distribution of orbital poles for 252 visual binaries is analyzed to check a possible tendency towards parallelism. It is confirmed that orbital planes do not show any trend to be parallel to the Galactic plane. No strong evidence is found for a preferential orientation of the orbital planes for subgroups of binaries with similar periods and eccentricities. Asymmetry in the distribution...
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