Astrometric Measurements of 05276-0843 HLD 75, 06347-8239 WFC 38, 05445-2058 KPP 125, 10296+3757 HJ 2532 AB and 09174+2339 STF 1332 (HD 79872)

Abstract

The double star systems 05276-0843 HLD 75, 06347-8239 WFC 38, 05445-2058 KPP 125, 10296+3757 HJ 2532 AB, and 09174+2339 STF 1332 (HD 79872) were measured and analyzed to classify each system as physically related and/or gravitationally bound. Our team requested 10-11 images of each system from the Las Cumbres Observatory Global Telescope network, which were then analyzed in AstroImageJ to compute the average position angle and separation. These were then plotted alongside historical measurements. Only 09174+2339 STF 1332 (HD 79872) showed evidence of a trend in the secondary's position relative to the primary over time, consistent with its known orbital solution. Gaia DR3 measurements on parallax and proper motion showed that all systems were likely physically related, but 05276-0843 HLD 75 had comparably lesser similarity in its component stars’ proper motions. Only systems 10296+3757 HJ 2532 AB and 09174+2339 STF 1332 (HD 79872) had relative velocities within their respective computed system escape velocities, supporting their classification as binary systems.