value	unc_up	unc_lo	author	ref	method
2.4900e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
4.0030e+18	6.7800e+17	6.7800e+17	Fienga	2020MNRAS.492..589F	Ephem
4.6100e+18	9.6500e+17	9.6500e+17	Fienga	2011CeMDA.111..363F	Ephem
5.3212e+18	1.2130e+18	1.2130e+18	Fienga	2013arXiv1301.1510F	Ephem