value	quality	siderealorsynodic	author	ref	method
18.1400	3	Synodic	Stephens	2016MPBu...43...15S	Lightcurve
18.1920	3	Synodic	French	2011MPBu...38..116F	Lightcurve
18.1934	2	Sidereal	Durech	2023A&A...675A..24D	Model
18.2160	3-	Synodic	Stephens	2016MPBu...43..323S	Lightcurve
18.2200	3-	Synodic	Mottola	2011AJ....141..170M	Lightcurve