Angle–mass representation for the two-body interaction model found for the main cluster body and substructure. The solid and dashed curves represent the bound incoming (BI) solution and uncertainties estimated as possible models with relative velocities 1400 and 1685 km s⁻¹. The total mass of the system is represented by the horizontal line, with its uncertainty (dashed lines). Two possible bound incoming solutions were found: BI_a and BI_b at 22° and 81° with respect to the plane of the sky.