value	quality	siderealorsynodic	author	ref	method
2.7470	3	Synodic	Stephens	2020MPBu...47...50S	Lightcurve
2.7475	2+	Synodic	Benishek	2020MPBu...47...75B	Lightcurve
2.7476	2+	Synodic	Pravec	LCDB	Lightcurve