$$\begin{array} { | l | c | c | }
\hline { \text { Star } } & \begin{array} { c }
\text { Parallax } \
\text { (sec of arc) }
\end{array} & \begin{array} { c }
\text { Spectral } \
\text { Type }
\end{array} \
\hline 5 \text { Cen } & 0.026 & \text { B2 IV } \
\hline \text { HR 4758 } & 0.05 & \text { G0 V } \
\hline \text { HD 39801 } & 0.005 & \text { M2 I } \
\hline 9 \mathrm { CMa } & 0.4 & \text { Al V } \
\hline
\end{array}$$
-Which star in the table is the closest to Earth?

Question

$$\begin{array} { | l | c | c | } 
\hline { \text { Star } } & \begin{array} { c } 
\text { Parallax } \
\text { (sec of arc) }
\end{array} & \begin{array} { c } 
\text { Spectral } \
\text { Type }
\end{array} \
\hline 5 \text { Cen } & 0.026 & \text { B2 IV } \
\hline \text { HR 4758 } & 0.05 & \text { G0 V } \
\hline \text { HD 39801 } & 0.005 & \text { M2 I } \
\hline 9 \mathrm { CMa } & 0.4 & \text { Al V } \
\hline
\end{array}$$
-Which star in the table is the closest to Earth?

Quizplus · Accepted Answer

The star with the largest parallax angle is the closest to Earth. 9 CMa has the largest parallax of 0.4 arcseconds, indicating it is the closest.

-Which Star in the Table Is the Closest to Earth