value	unc_up	unc_lo	author	ref	method
2.0376e+18	6.4829e+17	6.4829e+17	Fienga	INPOP19a	Ephem
2.4300e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
6.1100e+18	9.2100e+17	9.2100e+17	Fienga	2011CeMDA.111..363F	Ephem
6.9119e+18	1.3124e+18	1.3124e+18	Fienga	2013arXiv1301.1510F	Ephem