value	quality	siderealorsynodic	author	ref	method
27.7700	3	Synodic	Mottola	2011AJ....141..170M	Lightcurve
27.7950		Synodic	McNeill	2021PSJ.....2....6M	Lightcurve
27.7980	2	Sidereal	Durech	2023A&A...675A..24D	Model