Orbits of 11 visual binary stars

In this paper, the orbital elements for 11 visual binaries are given and calculated. Eight already possess orbits, but here they are recalculated. The reason is that recent measurements show higher residuals with respect to the corresponding ephemerides calculated by using the orbital elements given in the Sixth Catalog of Orbits of Visual Binary Stars. The eight binaries are: WDS 03454−2752, WDS 03596−1019, WDS 04400+5328, WDS 05322+7049, WDS 06274−2544, WDS 08254+3723, WDS 17457+1743 and WDS 19531−1436. For three binaries the orbital elements are calculated for the first time: WDS 00046+4206, WDS 04496−5353 and WDS 17141−0824. In addition to the orbital elements in this paper masses, dynamical parallaxes, absolute magnitudes and ephemerides for the next five years are also given and calculated.