\documentclass{article}
\usepackage[utf8]{inputenc}
\usepackage{booktabs}

\title{}
\author{}
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\begin{document}

\begin{table}
    \centering
    \begin{tabular}{cccc}
        \toprule
        comp. & $\mu_{\alpha}$ & $\mu_{\delta}$ &  parallax   \\
        - & (mas/yr) & (mas/yr) & (mas) \\
        \midrule
         A &   55.497$\pm$0.073 & 75.010$\pm$ 0.074  &  11.7021     \\
         B &   -2.965$\pm$0.044 & -5.943$\pm$ 0.037  &  0.0188     \\
         C &   -6.205$\pm$0.059 & -13.512$\pm$ 0.048  &  0.0257     \\
         D &   2.357$\pm$0.132 & 10.410$\pm$ 0.107  &  2.5548     \\
        \end{tabular}
           \caption[c]{Proper motions and parallax for V2080 Cyg A and the  potential visual companions.}
           \label{tab:my_label}
\end{table}

\maketitle

\end{document}
