Procyon is the home system of the Chenjesu and Mmrnmhrm. At the time of UQM, they have been put in a Slave Shield. They are in the process of joining together to become a unified race of crystaline machines. This process will take 35 years, but you don't have that kind of time. With the aid of the Sun Device, you complete the transmutation in seconds, allowing the new race, the Chmmr, to emerge and join you. This also has a couple side effects. If you have the Utwig Bomb by this point (and you should), you will be fitted with the final bomb to destroy the Sa-Matra, and are given an unlimited amount of RUs due to the incredible amount of mineral wealth given to the Earth Starbase.