\begin{table}%t1 \caption{\label{TAB:data}Optical position and redshift of the QSO and companion galaxy in the HE0450$-$2958 system.} %\centerline {\begin{tabular}{cccc} \hline\hline \noalign{\smallskip} Source&Redshift$^{{a}}$ & RA$^{{b}}$ &Dec.$^{{b}}$ \\ \hline QSO & 0.2863 & 04h52m30.105s& --29$\degr$53$\arcmin$35.57$\arcsec$ \\ Companion & 0.2865 & 04h52m30.201s& --29$\degr$53$\arcmin$36.58$\arcsec$\\ \hline \end{tabular}} \par \smallskip $^{a}$ Reference: Canalizo \& Stockton (\cite{Canalizo01}). $^{b}$ HST--ACS positions (J2000). \end{table}