Orbits of (a) 133P, (b) 259P, (c) 311P, (d) 331P, (e) 324P, (f) 354P, and (g) P2015 X₆. The black lines represent the orbits of the planets, the blue line shows the orbit of the object, the blue circle shows its perihelion, the red asterisks show the places where activity has been observed, the green asterisks represent the observations made during this work in which activity was confirmed, and the cyan asterisks indicate were no activity was found. The view is from the north ecliptic pole, so that the movement of the objects in their orbits is counterclockwise.