Our results form the volume integration of L₂ equipotential surfaces with respect to different mass ratios q. All distance values are presented in units of R_L1. Here, R_L2 is the radius of a sphere with volume equal to that of the L₂ equipotential surface (solid orange line). D_L2 is the distance of the L₂ point from M_donor (solid blue line). The dashed black line shows the orbital separation in units of R_L1. Systems where the donor’s radius exceeds any of these limiting radii are considered as undergoing dynamical instability.