value	quality	siderealorsynodic	author	ref	method
6.8450	3	Synodic	Behrend	LCDB	Lightcurve
6.8500	3	Synodic	Stephens	2002MPBu...29...34S	Lightcurve
6.8600	2	Sidereal	Durech	2018A&A...620A..91D	Model
6.8602	2	Sidereal	Durech	2023A&A...675A..24D	Model
6.8607	3	Synodic	Behrend	LCDB	Lightcurve
6.8608	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
6.8640	3	Synodic	Sheridan	2002MPBu...29...32S	Lightcurve