Distribution of post-SN eccentricity, e_pSN, and orbital period, P_pSN, for an example binary system (see Sect. 3.2 for details). Solid white lines indicate the final orbital parameters of the fixed kick velocity, w, and the variable angle, θ, formed between the kick velocity and the orbital velocity, assuming the kick to be on the orbital plane (i.e., ϕ = 0). Dashed black lines indicate the same for a fixed θ and a variable w. A thick solid red line shows the boundary separating wide (right of the curve) from merging (left of the curve) systems.