value	quality	siderealorsynodic	author	ref	method
28.1618	2	Sidereal	Durech	2018A&A...617A..57D	Model
30.5000	2	Synodic	Pravec	LCDB	Lightcurve
30.6000	3-	Synodic	Brinsfield	2012MPBu...39..156B	Lightcurve