value	quality	siderealorsynodic	author	ref	method
6.3634	3	Synodic	Behrend	LCDB	Lightcurve
6.3649	2	Sidereal	Durech	2016A&A...587A..48D	Model
6.3700	3	Synodic	Warner	2009MPBu...36..172W	Lightcurve
7.0000	2	Synodic	Szekely	2005P&SS...53..925S	Lightcurve