60 million km from the Sun (0.4 times the distance of the Earth from the Sun)
88 Earth days (0.24 of an Earth year)
4,900 km (0.4 times the diameter of the Earth)
59 Earth days (1.5 Mercury days in a Mercury year)
6% of the mass of the Earth
about three-eighths of the gravitational force on Earth
0.11 (similar to that of a road)
Mercury has no moons.