value	quality	siderealorsynodic	author	ref	method
6.4680	3-	Synodic	Behrend	LCDB	Lightcurve
6.4752	2	Sidereal	Durech	2020A&A...643A..59D	Model
6.4752	3	Synodic	Galad	2008MPBu...35..144G	Lightcurve