value	quality	siderealorsynodic	author	ref	method
12.9520	2	Sidereal	Martikainen	2021A&A...649A..98M	Model
12.9521	2	Sidereal	Durech	2018A&A...617A..57D	Model
21.0380	2+	Synodic	Polakis	2018MPBu...45..347P	Lightcurve
26.2700	1	Synodic	Behrend	LCDB	Lightcurve