How many rotations on its axis does it take Mercury to complete one revolution round the Sun?

Answer 1

Rotation of a planet creates day and night. Revolutions are orbits (years).

Mercury turns relatively slowly, making one rotation (spin) about every 58.65 Earth days. At the same time, it orbits the Sun once every 88 Earth days. So there are almost exactly 1.5 Mercury rotations per revolution.

This is not a coincidence, but the result of gravitational interactions with the Sun, and gives Mercury 3 spins for every 2 orbits. Its farthest distance from the Sun is approximately 1.5 times farther than its closest approach.

The result, however, is an odd combination : with the planet rotating in the same direction as it orbits, the "apparent solar day" (sunrise to sunrise) is actually two of its years, about 176 days. An observer on the planet would see the Sun come up, move across the sky, then hover or even back up in its motion, and then finally set after 88 days of daylight. Some locations would see it rise, reverse back below the horizon, and then rise again. (The stars would still move across the sky at a slow but steady pace.)

Answer 2

59 Earth Days
~58 Earth days to rotate on its axis

~88 Earth days to revolve around the sun

Answer 3

I don't know how long it takes for it to make one revolution around the sun... but it takes 4222.6 hours to make one complete rotation on it's axis!!! Yo peace ya'll