Question

a star is located 9 light years away from us. what is its distance in parsec. what is tha parallax shown by this star when viewed from two locations 3×10 to he power 11 m apart.

Answer 1

As we know the conversion factor is,

1 light year=0.306601 parsec

So, the distance of the star in parsec is,

d=9 light years=9×0.306601=2.759409 parsec

The parallax shown by the star is,

Parallax Angle=bD=3×10119.461×1015ϕ=0.32×10−4 rad