value	quality	siderealorsynodic	author	ref	method
9.1020	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
9.1400	2	Synodic	Chang	2015ApJS..219...27C	Lightcurve
9.1657	2	Sidereal	Durech	2023A&A...675A..24D	Model