The contours show the intersection regions of the backward-integrated orbits with the Galactic disk midplane in the X–Y-plane for the first crossing. The gray region is derived using the parallax-based distance, while the colored region is derived using the improved distance from isochrone fitting constrained by photometric and spectroscopic measurements. The dashed lines for the parallax-based distance and the black solid lines for the improved distance from isochrone fitting mark the 16th, 50th, and 84th percentiles (from inner to outer) of the plane-crossing distribution, corresponding to the 1σ interval around the median.