Deep MOND binary. Shown is the relative motion over 20 Myr of the isolated test binary with initial conditions (filled black circle) given at the beginning of Sect. 4.1 for three different sets of equations of motion: full MLD with transition function (red solid line), MLD in the deep MOND limit (Eqs. (39) and (40), light red line), and Milgrom’s formulation (blue solid line, Eqs. (56) and (57)). The small filled circles show the orbital positions in steps of 2 Myr.