Mass (top) and equatorial radius (bottom) of static (solid lines) and rapidly rotating neutron stars as functions of their central energy density for the EOS parameter sets marked in Figure 3 and listed in Table 1. The neutron stars rotating at their respective Kepler frequencies and at the minimum frequency f_2.5 that can rotationally support a neutron star with mass 2.50 M_⊙ are shown as dashed lines and dotted lines, respectively. The reported mass 2.50–2.67 M_⊙ of GW190814's secondary component is shown as a gray band.