2006BaltA..15..539B

The spectroscopic orbit of a high proper motion visual binary system BD +30 2129 component A is determined from 22 CORAVEL-type radial velocity measurements. A period of P = 32.79 days and a moderate eccentricity e = 0.29 are obtained. The visual system AB has a projected spatial separation ∼580 AU. The system's barycenter velocity V₀ = -35.95 km/s and the transverse velocity V_ t_ = 132.2 km/s. The Galactic spatial velocity components U = +76.7 km/s, V = -110.4 km/s, W = -26.6 km/s, and a large ultraviolet excess give evidence that the star belongs to thick disk population of the Galaxy.