value	quality	siderealorsynodic	author	ref	method
6.6730	3	Synodic	Stephens	2020MPBu...47..275S	Lightcurve
6.6800	3	Synodic	Warner	2011MPBu...38...25W	Lightcurve
6.6860	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve