value unc_up unc_lo author ref method 10.40 0.056 0.056 Masiero 2011ApJ...741...68M NEATM 11.45 0.180 0.180 Masiero 2012ApJ...759L...8M NEATM 9.49 0.090 0.090 Masiero 2014ApJ...791..121M NEATM