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Based on photographic and CCD observations with the Pulkovo 26-inch refractor, radial velocity measurements with the 1.5-m RTT-150 telescope (TUBITAK National Observatory, Turkey), and highly accurate observations published in the WDS catalog, we have obtained the orbits of ten wide visual double stars by the apparent motion parameter method. The orientation of the orbits in the Galactic coordinate...
Based on photographic and CCD observations in 1971–2013 with the Pulkovo 26-inch refractor and radial-velocity measurements in 1999–2014 with the 1-m telescope of the Simeiz branch of the Crimean Astrophysical Observatory, we have obtained for the first time the orbits of the nearby visual double star GJ 767 as a function of the adopted relative radial velocity with a minimum period of 415 years and...
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