value	quality	siderealorsynodic	author	ref	method
19.3530	3	Synodic	Behrend	LCDB	Lightcurve
19.3880	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
19.3900	2	Synodic	Mohamed	1994A&AS..108...69M	Lightcurve
19.3913	2	Sidereal	Durech	2019A&A...631A...2D	Model
20.0000	1	Synodic	Schober	1994A&AS..105..281S	Lightcurve