value	quality	siderealorsynodic	author	ref	method
18.5000	2	Synodic	Behrend	LCDB	Lightcurve
18.6719	2	Sidereal	Durech	2019A&A...631A...2D	Model
18.7400	2	Synodic	Behrend	LCDB	Lightcurve