value	quality	siderealorsynodic	author	ref	method
15.1800	2	Synodic	Behrend	LCDB	Lightcurve
15.3000	3-	Synodic	Ditteon	2019MPBu...46..127D	Lightcurve
15.3038	2	Sidereal	Durech	2016A&A...587A..48D	Model