Parameter S as a function of S / N_A2 for all NEA without using Gaia DR3 – top panel, using Gaia DR3 – bottom panel. Green circles represent accepted values (S / N_A2 > 3 and S < 2) – consistent with the expected value scaled to the (99942) Apophis A2 value, blue circles are marginal cases with 2.5 < S / N_A2 < 3 and S < 2 and red are values with S / N_A2 > 3 or S > 2.5. The horizontal line represents S =2. The vertical line represents S / N_A2 = 3.