Original 1/a values for the same comets as in Fig. 7 using FULL and PRE data arcs and both GR and a variety of NG solutions, where NG solutions obtained using the whole data arcs are shown by red pentagons (standard g(r), 1/a_{ori,full,NG–std}), and magenta triangles (g(r)-like function based on CO sublimation, 1/a_{ori,full,NG–CO}), while upward-pointing and inverted triangles show orbits using r₀ = 10 au and r₀ = 50 au, respectively. Inverted triangles are given for four comets only; we provide further discussion in Sects. 4 and 7.1.