How long would it take light from the sun to reach Mercury?
From perihelion to aphelion, it ranges from 2 m 33 s to 3 m 53 s,
The orbit of Mercury is highly eccentric. The orbit eccentricity is
about 12 times Earth's
Light second = 299192.458 km.
From Planetary Fact Sheet, NASA,
Aphelion = 69.8 million km.
At the farthest-from-Sun, aphelion, sunlight takes.
=233 s, nearly, to reach Mercury.
When nearest at perihelion - 46.0 million km,
the time taken is
= 153 s.