value	unc_up	unc_lo	author	ref	method
1.0600e+18	1.6200e+19	1.6200e+19	Zielenbach	2011AJ....142..120Z	Deflec
1.3000e+19	3.2200e+19	3.2200e+19	Zielenbach	2011AJ....142..120Z	Deflec
2.1900e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
3.8448e+18	1.5627e+18	1.5627e+18	Fienga	INPOP19a	Ephem