value	quality	siderealorsynodic	author	ref	method
6.6626	2	Sidereal	Durech	2018A&A...620A..91D	Model
6.6632	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
6.6660	2-	Synodic	McNeill	2019ApJS..245...29M	Lightcurve