value	unc_up	unc_lo	author	ref	method
1.4700e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
1.6740e+18	6.6300e+17	6.6300e+17	Fienga	2020MNRAS.492..589F	Ephem
4.6590e+18	1.1931e+18	1.1931e+18	Fienga	2013arXiv1301.1510F	Ephem