Mendorax Dellora

Mendorax Dellora was a human colony planet which; by the year 5343, was ruled by King Hydroflax. (TV: The Husbands of River Song)

Astronomical data
The surface of the planet appeared to be Earth like, blanketed with ice and snow, littered with large stretches of forest and an oxygen rich atmosphere, apparently capable of sustaining human life.

The planet had two large blue moons visible within its atmosphere. (TV: The Husbands of River Song)