What is the mass of mercury?

Mercury consists of approximately 70% metallic and 30% silicate material. Mercury's density is the second highest in the Solar System at 5.427 g/cm3, only slightly less than Earth's density of 5.515 g/cm3. read more

The most widely accepted theory is that Mercury originally had a metal–silicate ratio similar to common chondrite meteorites, thought to be typical of the Solar System's rocky matter, and a mass approximately 2.25 times its current mass. read more

Mass and Density of Mercury. Mercury is the smallest planet in the Solar System. Its radius is a mere 2,439.7 km. It is so small that the moons of other planets such as Ganymede and Titan are larger than Mercury. read more