Solar Fact File #1: Mercury

Average distance from Sun: 36 million miles

Diameter: 3032 miles

Rotation: 58.65 days

Orbital Period: 88 days

Mean temperature: 167 ℃

Axial tilt: .01 degrees

Gravity: 3.7m/s²

Mass: 3.30 x 10^23 kg (5.5% Earth)

First recorded: 14th Century BC by Assyrian astronomers

Moons: 0

 

 

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