value	quality	siderealorsynodic	author	ref	method
17.6560	3	Synodic	Pravec	LCDB	Lightcurve
17.6569	2	Sidereal	Durech	2018A&A...617A..57D	Model
17.6569	2	Sidereal	Durech	2023A&A...675A..24D	Model