Family of orbital solutions with a mean radial velocity during the transit between –35 and –27.5 km/s and a mean radial acceleration between 0.9 and 1.3 km/s/h, consistent with the linear part of the exocomet radial velocity observed during the first three hours of observation on the first 2019 night, and assuming an inclination i equal to 0.0 and a fixed longitude of ascending node Ω (degenerate with argument of periastron ω when i = 0). A linearly accelerating absorption line still permits a wide combination of orbital eccentricities, semimajor axes, and orbital orientations.