value	unc_up	unc_lo	author	ref	method
12.46	nan	nan	Waszczak	2015AJ....150...75W	Lightcurve
12.47	nan	nan	Durech	2018A&A...617A..57D	Model
12.52	nan	nan	Binzel	1987Icar...72..135B	Lightcurve