value	unc_up	unc_lo	author	ref	method
2.2900e+18	nan	nan	Folkner	2014IPNPR.196C...1F	Ephem
3.7200e+17	3.2400e+18	3.2400e+18	Zielenbach	2011AJ....142..120Z	Deflec
4.1590e+18	9.1800e+17	9.1800e+17	Fienga	2020MNRAS.492..589F	Ephem
7.1400e+18	2.7800e+17	2.7800e+17	Fienga	2009A&A...507.1675F	Ephem