value	quality	siderealorsynodic	author	ref	method
27.4300	2	Synodic	Chang	2015ApJS..219...27C	Lightcurve
27.4410	2	Synodic	Waszczak	2015AJ....150...75W	Lightcurve
27.4500	2	Sidereal	Durech	2019A&A...631A...2D	Model
27.4510	2	Sidereal	Durech	2023A&A...675A..24D	Model