value	unc_up	unc_lo	author	ref	method
1.3800e+18	nan	nan	Folkner	2009IPNPR.178C...1F	Ephem
1.4400e+18	3.6700e+17	3.6700e+17	Fienga	2020MNRAS.492..589F	Ephem
1.8500e+18	5.9300e+17	5.9300e+17	Fienga	2011CeMDA.111..363F	Ephem
1.8600e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
2.1400e+17	6.6900e+17	6.6900e+17	Fienga	2014arXiv1405.0484F	Ephem