Mercury is the smallest
and innermost planet in the Solar System.
Its
orbital period around the Sun of 87.97 days is the shortest of all the planets
in the Solar System.
It is named after the Roman deity Mercury, the
messenger of the gods.
Distance from Sun: 57.91 million km
Radius: 2,440 km
Length of day: 58d 15h
30m
Orbital period: 88 days