value	quality	siderealorsynodic	author	ref	method
50.3870	2	Sidereal	Hanus	2011A&A...530A.134H	Model
50.4000	3	Synodic	Behrend	LCDB	Lightcurve
50.4000	3	Synodic	Kryszczynska	2012A&A...546A..72K	Lightcurve
50.4180	2	Synodic	Erasmus	2020ApJS..247...13E	Lightcurve
50.4400	3-	Synodic	Stephens	2007MPBu...34...14S	Lightcurve