Improved Orbit and Mass of the Binary Star 61 Cyg Based on Photographic Observations at Pulkovo

Observations of stars close to the sun which, in terms of their physical properties, are possible objects for space missions aimed at searching for planetary components, are made at the Pulkovo Observatory. In this paper we present new orbital elements for the binary star 61 Cyg derived from long-term series of observations at Pulkovo including current data on this star.