value unc_up unc_lo author ref method 10.86 0.130 0.130 Masiero 2014ApJ...791..121M NEATM 10.91 0.155 0.155 Masiero 2011ApJ...741...68M NEATM 13.35 0.360 0.360 Masiero 2012ApJ...759L...8M NEATM