Astrometric Measurement of wds17191-4638 BSO13AB with analysis using GAIA DR3 and Speckle ToolBox

Abstract

17191-4638 BSO 13 AB has a Grade 4 orbit in the Sixth Catalog of Orbits of Visual Binary Stars. The nature of 17191-4638 BSO 13 AB was further investigated using a current measure, GAIA DR3 data and Speckle ToolBox. 17191-4638 BSO 13 AB was imaged using the Las Cumbres Observatory Global Network of Telescopes. Calibrated images were obtained and analysed using the software AstroImageJ to determine separation, position angle and delta magnitude. Using the GAIA DR3 data and apparent separation reported in this paper, mean physical distance separation was estimated. The angle between the space velocity vectors in 3 dimensions (Nugent metric) and E_binding were calculated. No changes occurred in the orbital parameters following optimization using the orbits function of Speckle ToolBox. The analysis of 17191-4638 BSO 13 AB provides strong supportive evidence of a binary star system. Parallax data on the fainter C and D components of 17191-4638 BSO 13 indicate that these are not gravitationally associated with the A and B stars.