value	quality	siderealorsynodic	author	ref	method
8.4160	3	Synodic	Pravec	LCDB	Lightcurve
8.4171	2	Sidereal	Durech	2020A&A...643A..59D	Model
8.4171	2	Sidereal	Athanasopoulos	2022A&A...666A.116A	Model