value	unc_up	unc_lo	author	ref	method
6.74	nan	nan	Waszczak	2015AJ....150...75W	Lightcurve
6.76	nan	nan	Masiero	2009Icar..204..145M	Lightcurve
6.76	nan	nan	Chang	2015ApJS..219...27C	Lightcurve