value	quality	siderealorsynodic	author	ref	method
18.0000	2-	Synodic	Behrend	LCDB	Lightcurve
18.2026	2	Synodic	Behrend	LCDB	Lightcurve
18.2730	3-	Synodic	Warner	2010MPBu...37..112W	Lightcurve
18.2791	2	Sidereal	Durech	2020A&A...643A..59D	Model
18.2810	3	Synodic	Ferrero	2013MPBu...40...31F	Lightcurve