value	unc_up	unc_lo	author	ref	method
1.8539e+18	8.9472e+17	8.9472e+17	Fienga	INPOP19a	Ephem
1.9900e+18	2.2800e+18	2.2800e+18	Zielenbach	2011AJ....142..120Z	Deflec
2.0500e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
2.4100e+18	1.7800e+18	1.7800e+18	Zielenbach	2011AJ....142..120Z	Deflec
2.6700e+18	1.7800e+18	1.7800e+18	Zielenbach	2011AJ....142..120Z	Deflec
4.1600e+18	2.6600e+18	2.6600e+18	Zielenbach	2011AJ....142..120Z	Deflec
7.8300e+18	3.1300e+18	3.1300e+18	Fienga	2011CeMDA.111..363F	Ephem