value	unc_up	unc_lo	author	ref	method
4.1000e+17	1.1900e+17	1.1900e+17	Merline	2002aste.book..289M	BinImg
8.2900e+17	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
8.3000e+17	2.0000e+16	2.0000e+16	Descamps	2007Icar..187..482D	BinImg
9.8599e+17	4.8494e+17	4.8494e+17	Fienga	INPOP19a	Ephem