Question

The star Procyon is 11 light-years away. What is its distance in kilometers?

Answer 1

4-sd approximation is 108.4 trillion km

Explanation:

The 4-sd approximation in light years (ly) to the distance of the

binary star system of larger Procyan A and smaller Procyon B, in the

Northern Sky, is 11.46 ly.

1 light second (ls) =299792.58 km.

1 ly =(1 ls )X (1 year in seconds)

=(299792.458) X (365,256363 X 24 + 60 X 60) km

`=9.4609` trillion km, nearly.

So, Procyon distance is

9.4609 X 11.46 trillion km

=108.4 trillion km, nearly.

Here, 1 trillion = `10^12`.