value	quality	siderealorsynodic	author	ref	method
19.8560	2-	Synodic	McNeill	2019ApJS..245...29M	Lightcurve
19.8820	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
19.8908	2	Sidereal	Durech	2020A&A...643A..59D	Model
19.8910	2	Sidereal	Durech	2018A&A...620A..91D	Model
19.9152	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve