value unc_up unc_lo author ref method 2.4500e+18 nan nan Folkner 2014IPNPR.196C...1F Ephem 4.4800e+18 2.1100e+18 2.1100e+18 Zielenbach 2011AJ....142..120Z Deflec 4.5900e+18 2.1000e+18 2.1000e+18 Zielenbach 2011AJ....142..120Z Deflec 4.6442e+17 2.3181e+17 2.3181e+17 Fienga INPOP19a Ephem 9.3200e+18 4.3700e+18 4.3700e+18 Zielenbach 2011AJ....142..120Z Deflec 9.5100e+18 5.6200e+18 5.6200e+18 Zielenbach 2011AJ....142..120Z Deflec