Yona

Yona as seen from space (Space Engine)

Yona is the main setting of Undersided, the second planet from the Sun and the home of humans, orbiting at a distance of 0.85 AU. It is a rocky planet with a mass of 0.65 times that of Earth, and a radius of 0.87 times. It has an axial tilt of 9 degrees, meaning seasonality is very low, and is currently in an ice age, with an average temperature of 1 degree Celsius (274 degrees Kelvin). Its atmospheric pressure is 0.87 times that of Earth, and its gravity is 0.85 times that of Earth.

Yona has oceans of water.

It is in a binary system with the Moon, conventionally considered its satellite.