LoTr 5 - hints of a planet in a planetary nebula?

Aller et al. "A new look inside Planetary Nebula LoTr 5: A long-period binary with hints of a possible third component"
https://arxiv.org/abs/1801.06032

Here's a study of the system HD 112313 (IM Comae Berenices) at the centre of the planetary nebula LoTr 5, which contains a G-type star (either subgiant or giant) and an sdO star in a ~2700-day orbit. Radial velocities of the G-star indicate periods of ~5 and possibly ~129 days, the former likely the rotation period of the star, the latter may be due to a massive planet or low-mass brown dwarf, possibly in a highly-eccentric orbit. Follow-up studies would be needed to confirm the ~129-day period and whether or not it is due to orbital motion.

Lord of The ring?

According to http://cds.u-strasbg.fr/cgi-bin/Dic-Simbad?PN%20LoTr
It's "Longmore+Tritton"