value	quality	siderealorsynodic	author	ref	method
15.6240	3	Synodic	Behrend	LCDB	Lightcurve
15.6360	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
15.6470	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve