value	quality	siderealorsynodic	author	ref	method
19.7910	2	Sidereal	Durech	2023A&A...675A..24D	Model
19.7912	2	Sidereal	Durech	2020A&A...643A..59D	Model
19.7950	2	Synodic	Erasmus	2020ApJS..247...13E	Lightcurve
19.8050	3	Synodic	Clark	2015MPBu...42...15C	Lightcurve
19.8150	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve