value	quality	siderealorsynodic	author	ref	method
6.8640	2	Synodic	Folberth	2012MPBu...39...51F	Lightcurve
6.8680	3	Synodic	Alkema	2013MPBu...40..133A	Lightcurve
6.8695	2	Synodic	Polakis	2018MPBu...45..199P	Lightcurve