Evolution of the value of the semimajor axis of 2022 NX₁. The evolution according to the nominal orbit in Table 1 is shown in black and those of control or clone orbits with Cartesian vectors separated ±3σ from the nominal values in Table C.1 are displayed in orange and brown, respectively. In red, we signal the location of the 3:2 external resonance with Venus at 0.9478 AU, and in blue we show the location of the 3:2 external resonance with Earth at 1.3104 AU.