value	quality	siderealorsynodic	author	ref	method
6.6932	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
6.6970	2	Sidereal	Durech	2020A&A...643A..59D	Model
6.6970	2	Sidereal	Durech	2023A&A...675A..24D	Model