Distributions of the initial (ZAMS) orbital properties for systems that result in a stellar merger in the fiducial model. On the y-axis, we show the number of simulated systems. Properties of the inner orbits are shown in blue and the outer orbits in red. The complete simulated population is shown in grey for comparison. Panels show (top left) semi-major axis, (top right) eccentricity, (bottom left) mass ratio (q = m₂/m₁ for inner orbits, q = m₃/(m₁ + m₂) for outer), and (bottom right) mutual inclination between the inner and outer orbits.