value	quality	siderealorsynodic	author	ref	method
6.5400	2	Synodic	Warner	2017MPBu...44..331W	Lightcurve
6.6200	2	Synodic	Binzel	1992Icar...95..222B	Lightcurve
6.6257	2	Sidereal	Durech	2023A&A...675A..24D	Model