value	quality	siderealorsynodic	author	ref	method
6.8900	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
6.8921	2	Sidereal	Durech	2020A&A...643A..59D	Model
6.8926	3	Synodic	Behrend	LCDB	Lightcurve
6.8930	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve