value	quality	siderealorsynodic	author	ref	method
6.7000	3	Synodic	Tedesco	LCDB	Lightcurve
6.7420	3	Synodic	Pilcher	2022MPBu...49..185P	Lightcurve
6.7433	2	Sidereal	Durech	2020A&A...643A..59D	Model