value	quality	siderealorsynodic	author	ref	method
2.9705	2+	Synodic	Pravec	LCDB	Lightcurve
2.9710	2	Synodic	Dose	2021MPBu...48..125D	Lightcurve
2.9710	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve