value	quality	siderealorsynodic	author	ref	method
18.7900	2	Synodic	Casalnuovo	2017MPBu...44..178C	Lightcurve
18.7937	2	Sidereal	Durech	2020A&A...643A..59D	Model
18.7939	2	Sidereal	Durech	2023A&A...675A..24D	Model
2.9200		Synodic	Erasmus	2019ApJS..242...15E	Lightcurve