value	quality	siderealorsynodic	author	ref	method
6.6687	3	Synodic	Behrend	LCDB	Lightcurve
6.6690	2	Sidereal	Durech	2023A&A...675A..24D	Model
6.6690	2	Sidereal	Durech	2020A&A...643A..59D	Model
6.6691	2	Sidereal	Durech	2018A&A...617A..57D	Model