value	quality	siderealorsynodic	author	ref	method
6.8750	3	Synodic	Simpson	2013MPBu...40..146S	Lightcurve
6.8762	2	Sidereal	Durech	2020A&A...643A..59D	Model
6.8786	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve