Arcturus IV, also simply known as Arcturus, is the fourth planet in the Arcturus system. Arcturus IV is a planet in the Alpha Quadrant with seven moons. Once every six years, three of Arcturus's moons would be full at once. During the 26th century, Arcturus IV was a haven for thieves, criminals and malcontents from all over the Alpha and Beta Quadrants. Earth has a presence on the planet, turning it into a refugee world with a population of 8.5 Billion.