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Astrometric investigation of visual binaries at Pulkovo

Romanenko, L. G.; Kalinichenko, O. A.

In the last 40 years the team headed by A.A. Kiselev at Pulkovo determined the orbits of 65 wide visual binaries and multiple stars. In most of the cases these studies are based on series of photographic observations made with the 26-inch refractor of Pulkovo observatory. Positional observations from Washington Double Star Catalog (WDS) were used …