Auna the largest which is nearly the size and distance of Earth's moon, but is part of a double moon system with Mina, which is about 30 percent smaller. They orbit a barycenter well above Auna's crust, both of which orbit around the planet.
They would take a month (about an earth month) to orbit the planet but every 3 months they would fully orbit each other as well. this would be a long month.