value	quality	siderealorsynodic	author	ref	method
56.7000	2	Synodic	Pravec	LCDB	Lightcurve
56.7010	2	Sidereal	Durech	2018A&A...617A..57D	Model
56.7200	3-	Synodic	Salvaggio	2015MPBu...42..215S	Lightcurve