# How would I find the distance of a star in parsecs and light years if parallax is known? For example, Sirius, the brightest star in the sky, has a parallax of 0.379 arcsec. What is its distance in parsecs? In light years?

The distance to the star $= \frac{1}{.379} = 2.638$ parsecs.
$1$ parsec $= 3.26$ light years
$3.26 \cdot 2.638 = 8.6$ light years