value unc_up unc_lo author ref method 0.137 0.0260 0.0260 Masiero 2012ApJ...759L...8M NEATM 0.146 0.0160 0.0160 Masiero 2011ApJ...741...68M NEATM 0.190 0.0200 0.0200 Masiero 2014ApJ...791..121M NEATM