Solar System
Solar System is in Orion Arm of the Milky Way.
Mercury
Mercury ...
is, on average, 0.39 AUs from the Sun.
has a diameter of 2440 Kms; around one third of the Earth.
has an eccentic orbit with the closest distance to the Sun being 47 million kilometers, and the farthest distance being 70 million kilometers.
has a year of 88 days.
spins on its axis every 59 days.
is tilted at 2 degrees.
formed around 4.5 Billion years ago.
Sun
The Sun is the star at the centre of the Solar System.
The Sun ...
has a mass of 1,9885,000,000,000,000,000,000,000,000,000 Kg which is 342,714 times that of the Earth, and is 99.86% of the entire Solar System.
has a diameter at its Equator of 1,392,684 km which is 109 times that of the Earth.
has circumference at its Equator of 4,379,000 Km.