value	unc_up	unc_lo	author	ref	method
1.0300e+17	4.3800e+15	4.3800e+15	Yeomans	1997Sci...278.2106Y	FlyBy
1.1900e+18	5.9700e+17	5.9700e+17	Fienga	2011CeMDA.111..363F	Ephem