value	quality	siderealorsynodic	author	ref	method
10.9826	2	Sidereal	Durech	2019A&A...631A...2D	Model
10.9837	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
10.9850	2	Sidereal	Durech	2023A&A...675A..24D	Model
10.9920	3	Synodic	Schmidt	2012MPBu...39..109S	Lightcurve
12.0000	1	Synodic	Lagerkvist	1978A&AS...31..361L	Lightcurve
18.0000	1	Synodic	Behrend	LCDB	Lightcurve
18.0000	2-	Synodic	Behrend	LCDB	Lightcurve