value	quality	siderealorsynodic	author	ref	method
20.0000	1	Synodic	Behrend	LCDB	Lightcurve
3.0117	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
3.0498	2+	Synodic	Clark	2015MPBu...42..163C	Lightcurve