value	quality	siderealorsynodic	author	ref	method
17.5380	2	Synodic	Behrend	LCDB	Lightcurve
39.5770	1	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
39.9165	2-	Synodic	Pal	2020ApJS..247...26P	Lightcurve