value	quality	siderealorsynodic	author	ref	method
20.0000	1	Synodic	Lagerkvist	1978A&AS...31..361L	Lightcurve
21.8510	3	Synodic	Stephens	2010MPBu...37...28S	Lightcurve
21.8740	2	Synodic	Koff	2006MPBu...33...31K	Lightcurve
21.8770	2	Sidereal	Durech	2023A&A...675A..24D	Model
21.8930	2+	Synodic	Behrend	LCDB	Lightcurve