Mercury

Designation

First planet from the Sun.

Mercury is the smallest planet and orbits the Sun faster than any other — just 88 Earth days per orbit. It also rotates extremely slowly, with one day equal to 59 Earth days. Mercury’s cratered surface resembles that of our Moon and preserves its impact history with asteroids and comets that got too close.

Did you know: Mercury has no atmosphere, and temperatures swing over 550ºC (1,000°F) between day and night.

Diameter

4880.00km 3032.94mi

This object compared to other %category%

Average distance from the Sun

Semi-major axis (a)

Deviation from a circular orbit

Eccentricity (e)

Angle of orbit

Inclination (i)

Orbital elements

When will it be closest to the Sun?

days left

How far is it today?

From the Sun

1.00au

From the Earth