value	quality	siderealorsynodic	author	ref	method
13.2303	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
6.6093	3	Synodic	Pravec	LCDB	Lightcurve
6.6130	3	Synodic	Stephens	2013MPBu...40...20S	Lightcurve