Question

How many light years away is the sun from pluto?

Answer 1

Pluto has a highly elliptical orbit, so its distance from the Sun varies. But it's only about 4-6 light hours, not light years.

Answer 2

4.75 light hours, nearly. This correction now is attributed to the timely message from Olthe 3rd. Thank you. I am sorry that I had used parsec-AU conversion, instead of ls-km conversion

Explanation:

1 light second = 299792 km, nearly.
Pluto's orbit is highly eccentric.
Its average distance is it semi=minor axis b = 5123.3 Million km.
In light hours, this average is (5123300000/299792)/3600 = 4.75 lh
The perihelion-aphelion range is 4.11 - 6.83 ight hours.