value	quality	siderealorsynodic	author	ref	method
8.2524	2	Sidereal	Durech	2018A&A...617A..57D	Model
8.2560	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
8.2800	2	Synodic	Chang	2015ApJS..219...27C	Lightcurve