value	quality	siderealorsynodic	author	ref	method
29.0000	2	Synodic	Behrend	LCDB	Lightcurve
31.0282	2	Synodic	Pal	2020ApJS..247...26P	Lightcurve
31.0600	2+	Synodic	Warner	2005MPBu...32...54W	Lightcurve
31.0651	2	Sidereal	Hanus	2016A&A...586A.108H	Model
31.0660	2	Sidereal	Durech	2023A&A...675A..24D	Model
31.0660	2	Sidereal	Hanus	2011A&A...530A.134H	Model