value	quality	siderealorsynodic	author	ref	method
2.7560	3-	Synodic	Behrend	LCDB	Lightcurve
2.7600	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
2.7602	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve