value	quality	siderealorsynodic	author	ref	method
20.0000	2	Synodic	Behrend	LCDB	Lightcurve
20.2160	3	Synodic	Holliday	2001MPBu...28...26H	Lightcurve
20.2218	2	Sidereal	Durech	2023A&A...675A..24D	Model
20.2220	2	Sidereal	Durech	2019A&A...631A...2D	Model
20.2221	2	Sidereal	Durech	2018A&A...617A..57D	Model
20.2221	2	Sidereal	Hanus	LCDB	Model
20.2222	2	Sidereal	Hanus	2018Icar..299...84H	Model
20.2800	2	Synodic	Behrend	LCDB	Lightcurve
20.2800	2	Synodic	Behrend	LCDB	Lightcurve
20.2800	2	Synodic	Behrend	LCDB	Lightcurve