value	quality	siderealorsynodic	author	ref	method
8.1350		Synodic	McNeill	2021PSJ.....2....6M	Lightcurve
8.1350	3	Synodic	French	2013MPBu...40..198F	Lightcurve
8.1381	2	Sidereal	Durech	2019A&A...631A...2D	Model