value	quality	siderealorsynodic	author	ref	method
6.6735	3	Synodic	Ditteon	2018MPBu...45...13D	Lightcurve
6.6741	2	Sidereal	Durech	2023A&A...675A..24D	Model
6.6741	2	Sidereal	Hanus	2013A&A...551A..67H	Model