\begin{table}%t2
\caption{\label{tbl-2}Radial velocities.}
%\centerline
{
\begin{tabular}{llr}
\hline\hline\noalign{\smallskip}
Observatory & {HJD$^a$ (2~450~000+)} & $\varv_{\rm helio}$ (km s$^{-1}$) \\
%{} & {} &  {(km s$^{-1}$)} \\
\hline
APO &  4008.64757 &   $-76.3 \pm  9.6$ \\
    &  4008.67122 &   $-81.1 \pm  9.0$ \\
    &  4008.69597 &   $-67.9 \pm  7.4$ \\
    &  4008.71765 &   $-56.4 \pm  27.5$ \\
    &  4008.74278 &   $-58.2 \pm  6.2$ \\
    &  4008.76422 &   $-70.0 \pm  14.4$ \\
KPNO & 4981.93904 &  $-258.6\pm4.0$  \\
     & 4982.92370 &  $-254.9\pm4.0$  \\
     & 4983.88449 &  $-220.1\pm4.0$  \\
     & 4984.92019 &  $-235.6\pm4.0$  \\
     & 4984.94194 &  $-252.5\pm4.0$  \\
\hline
\end{tabular}}
\medskip
$^a$~At mid-exposure.
%\medskip
\end{table}