value unc_up unc_lo author ref method 1.2750e+19 6.0000e+16 6.0000e+16 Benecchi 2010Icar..207..978B 1.3900e+19 2.5000e+18 2.5000e+18 Margot 2004DPS....36.0803M BinImg 1.4400e+19 2.2000e+18 2.2000e+18 Stansberry 2006ApJ...643..556S BinImg