Velos was an inhabited planetoid located in the Delta Quadrant.
In 2377, the con artist Gar convinced the merchant Kipp on Velos to give him three thousand induction units on consignment, but never returned to pay. The USS Voyager later arrived at Velos to inquire about Gar, who had stolen the EMH. (VOY: "Critical Care")
According to the Star Trek: Star Charts (p. 94), the Velos system was a trinary system with two F-class stars and an A-class star.