a−e diagram from the last Gyr of the benchmark model simulation incorporating gravitational interaction with Neptune. Negative values of Q₂, Q₂ = −1 (left panel) and Q₂ = −4 (right panel) were used. Two colours (trasparency levels) are used as a proxy for two inclination ranges. The blue (less transparent) evolutionary tracks represent orbits with inclinations spanning i ∈ (10,30) deg, which is the interval that the inclinations of Sednoids lie in. The grey (more transparent) tracks refer to all the other long-living orbits. Sedna and 2012 VP 113 are indicated as large dots. The dashed lines indicate q = 30, 50, 100, and 550 au levels (from right/bottom to left/upwards).