value	quality	siderealorsynodic	author	ref	method
6.7680	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
6.7709	2	Sidereal	Durech	2020A&A...643A..59D	Model
6.7750	3-	Synodic	Ditteon	2018MPBu...45..338D	Lightcurve