Density distribution of the planetary wind in the orbital mid-plane from the Athena++ 3D hydrodynamic simulations. The star is located at the center, with the planet on the left orbiting in the counter-clockwise direction. The diagonal dotted lines represent the observing angles of various orbital phases φ. The dark dotted contours indicate surfaces with densities of ρ = 1 × 10⁻¹⁸ g cm⁻³.