value	quality	siderealorsynodic	author	ref	method
40.6821	2	Sidereal	Durech	2016A&A...587A..48D	Model
40.6824	2	Sidereal	Hanus	2016A&A...586A.108H	Model
40.7200	3	Synodic	Brinsfield	2009MPBu...36...64B	Lightcurve
8.0000	1+	Synodic	Behrend	LCDB	Lightcurve