value	quality	siderealorsynodic	author	ref	method
8.6519	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
8.6540	2	Sidereal	Durech	2020A&A...643A..59D	Model
8.6541	2	Sidereal	Durech	2023A&A...675A..24D	Model