\begin{table}
\caption{\label{tab1}System parameters for Algol ($=\beta$ Per).}
%\centering
\par
\begin{tabular}{rrrr}
\hline\hline
Parameter& Primary & Secondary & System \\
\hline
Mass (g) & $7.54\times 10^{33}$ & $1.64\times 10^{33}$ & \\
\hline
Radius (cm) & $2.15\times 10^{11}$ & $2.29\times 10^{11}$ &\\
\hline
Spectral type   & B8V       & K2III & \\
\hline
Luminosity (erg/s) & $5.95\times 10^{35}$ & $2.44\times 10^{34}$ & \\
\hline
Rotation period (days)   & 2.8673  & 2.8673 & \\
\hline
Orbital period (days)    &    &  &  2.8673 \\
\hline
Separation (cm)       &    &  &  $1.02\times 10^{12}$ \\
\hline
Distance (pc)& & & 28\\
\hline
Inclination (degrees)& & & 82.5\\
\hline
\end{tabular}
\end{table}