value	quality	siderealorsynodic	author	ref	method
12.0000	2-	Synodic	Warner	2011MPBu...38...89W	Lightcurve
18.8940	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
8.6230	1+	Synodic	Behrend	LCDB	Lightcurve