Tempestus

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Tempestus is a habitable planet near the edge of the Viperius Galaxy.

A digital render of Tempestus

Characteristics

Tempestus is the fourth planet, at 0.78 AUs, from a G9-type star.

Size

Tempestus has a radius of nearly 10,000km, and masses around 0.4 Earth masses. This means it has 83% of Earth's density. The surface gravity is 0.65 Gs.

Composition

The crust of Tempestus is 47.3% oxygen, 29.2% silicon, 7.2% aluminium, 3.9% iron, 3.9% calcium and the remainder other metals and elements.

Surface

Tempestus' surface is 74% water and 0.7% ice.

Atmosphere

The atmosphere of Tempestus is 75.8% nitrogen, 23.7% oxygen, and the remainder other gases.

Rotation

Tempestus takes 25.5 standard hours to rotate on its axis. It has a stable axial tilt of 10.3 degrees.

Satellites

Tempestus has a moon around half the size of Earth's, believed to be a captured asteroid as it rotates at the wrong speed to have formed around Tempestus. It is located at 200,000km from the planet.

Biosphere

In Fiction