Number density of dust with radii in the range 0.1–100 μm integrated over the differential power-law size distribution with an exponent −3.7. The number density is shown in the PSE equatorial plane near Phaethon on February 22, 2025. Radiation pressure is taken into account. The dashed line shows the trajectory of a flyby that mimics the future DESTINY+ flyby. The dotted line represents the trajectory of a flyby at the same distance from the asteroid, but on the opposite side.