87.9691 Earth days.
Mercury has no moons.
Mercury orbits the sun not the Earth
It takes Mercury about 88 Earth days to complete one orbit around the Sun.
Do you mean how long does it take Mercury to orbit the sun ? 87.969 days
Mercury does not orbit the earth - ever!
Mercury takes about 88 Earth days to complete one orbit around the Sun.
Mercury: 0.2408 earth yearsNeptune: 164.8 earth years.
Mercury's orbit of the sun takes 87.969 days.
Mercury: 0.2408 earth yearsSaturn: 29.46 earth years.
Mercury doesn't orbit Earth.88 days
The question is confused: a planet orbits around the sun or it rotates (spins) on its axis. It does not orbit on its axis.
Mercury is the closest planet to the sun thus Mercury has the shortest orbit duration. It takes the planet Mercury 88 days to rotate around the sun.