value	quality	siderealorsynodic	author	ref	method
8.1680	2	Sidereal	Durech	2023A&A...675A..24D	Model
8.1680	2	Sidereal	Hanus	2016A&A...586A.108H	Model
8.1680	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
8.1681	3	Synodic	Pravec	LCDB	Lightcurve