Purulum

Purulum, meaning purple ring, is the fourth rock from the star Calux, and has a distinct ring band that orbits the planet on a steep tilted plane. The planet is a short distance outside of the habitable zone, but due to a powerful and intense greenhouse effect from excessive amounts of methane gas in its atmosphere, surface temperatures on the planet are a very reasonable 80°F (27°C) during summer days and 40°F (4°C) during winter nights. Perfect for organic life to thrive, it's assumed a very exotic type of life evolved on Purulum. Not much else is known about the mysterious planet other than it gets its distinct color from an above average level of argon in its stratosphere.