value	quality	siderealorsynodic	author	ref	method
17.6788	2	Synodic	Ortiz	2003A&A...409L..13O	Lightcurve
17.6800	2	Synodic	Thirouin	2010A&A...522A..93T	Lightcurve
8.8400	2	Synodic	Rabinowitz	2007AJ....133...26R	Lightcurve