value	quality	siderealorsynodic	author	ref	method
31.3160	2	Sidereal	Durech	2023A&A...675A..24D	Model
31.3161	2	Sidereal	Durech	2020A&A...643A..59D	Model
31.3900	3	Synodic	Polakis	2021MPBu...48..158P	Lightcurve