value	unc_up	unc_lo	author	ref	method
5.7444e+17	2.7493e+17	2.7493e+17	Fienga	INPOP19a	Ephem
7.4193e+17	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
8.2500e+17	3.5400e+17	3.5400e+17	Fienga	2011CeMDA.111..363F	Ephem