value	quality	siderealorsynodic	author	ref	method
19.7240	3	Synodic	Warner	2020MPBu...47..123W	Lightcurve
19.7255	2	Sidereal	Hanus	2016A&A...586A.108H	Model
19.7255	2	Sidereal	Martikainen	2021A&A...649A..98M	Model
19.7630	3	Synodic	Warner	2022MPBu...49..227W	Lightcurve
19.8000	2	Synodic	Dahlgren	1998Icar..133..247D	Lightcurve
19.8800	2	Synodic	Slyusarev	LCDB	Lightcurve