We obtain age estimates for the progenitor ( s ) of the extremely metal-poor ( [ Fe/H = -2.9 ) halo star CS 31082-001 , based on the recently reported first observation of a Uranium abundance in this ( or any other ) star .
Age estimates are derived by application of the classical r-process model with updated nuclear physics inputs .
The [ U/Th ] ratio yields an age of 13 \pm 4 Gyr or 8 \pm 4 Gyr , based on the use of the ETFSI-Q or the new HFBCS-1 nuclear mass models , respectively .
Implications for Thorium chronometers are discussed .