Absolute color H_g − H_z as a function of perihelion distance q (left) and orbital inclination i (right) for TNOs from the filtered dataset. Different dynamical classes are shown with distinct symbols and colors: resonant (blue circles), classical (green squares), detached (red triangles), scattered (orange crosses), centaurs (purple diamonds), and unclassified (black points). Error bars correspond to the standard deviation of the color measurements. Dynamical classes were assigned based on a merger with our dataset and the list from Johnston’s Archive (https://www.johnstonsarchive.net/astro/tnoslist.html).