value	quality	siderealorsynodic	author	ref	method
8.6715	2	Sidereal	Durech	2023A&A...675A..24D	Model
8.6750	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
8.6770	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve