Alpha Centauri IV (commonly known as Velestus, Centaurus or Al Rijil IV) is the fourth planet in the Alpha Centauri star system, orbiting the primary binary pair of stars, Rigil Kentaurus and Quindar. This world is class M and is home to a thriving human colony.
Alpha Centauri IV's most distinguishing celestial feature is its series of rings. It has two small moons, Nykos and Tharon, which are home to mining colonies. The planet's atmosphere is an oxygen-nitrogen mix with pressure close to Earth normal. Seventy percent of the planet is covered with water. There are hundreds of small islands scattered across the surface. The average temperature is 26.6° C.
Widely varying solar radiation levels, tectonic stress and other problems beset the planet driving the Alpha Centaurans to develop terraforming technology early in their history. Their scientists believe that, over ten million years ago, a third moon orbiting the planet was ripped apart by tidal forces as it descended too close to the planet, producing a rare ring system around the inner planet.
The population of the planet is 3 Billion.