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This poster displays a statistical summary based on the information contained in the Double Star Orbit Catalog of the Ramon Maria Aller Astronomical Observatory (OARMA). Among other findings, the current aleatory period-eccentricity distribution is particularly interesting. We have correlated eccentricities, periods, spectral types, Hipparcos parallaxes and the orientations of the orbital planes. A list is included that contains all of the names of the authors of the orbits as well as the number of orbits calculated by the authors (February 2011). [ABSTRACT FROM AUTHOR]

Revised orbits and system masses are presented for the following 6 visual double stars: WDS 01259-4754 (RST 33), WDS 16057-3252 (SEE 264), WDS 17575+1058 (BU 1299 AB), WDS 19471-0809 (A 108), WDS 21000+4004 (KUI 103), and WDS 22329+5348 (KUI 112 Aa). In all of these systems, at least one component is of the late-type and the latest observations were made using speckle or CCD techniques. Total system masses were calculated in each case from the orbital period and semiaxis major together with the updated Hipparcos parallax, except in the cases for which there were no Hipparcos data or when these values were not precise. [ABSTRACT FROM AUTHOR]