The Opaka star system:

             After the Dominion war and the exploration began again in the Gamma quardant. Colonel Kira Nerys asked to name the system after the
great Kai Opaka. Starfleet agreed and thus was born the Opaka system. Just .35 light years away from the mouth of the Bajorian wormhole, the
Opaka system would soon become the home for Starbase Gamma. Today the Opaka system is full of activity and exploration.

Opaka system: (Canon facts from Battlelines, DS-9 season 1)

Binary star system
Seven Planets
Two dozen moons total in system
Asteroid belt in outter area
Area flooded with Delta radiation from major sun.
Planet 3 - has 1 moon which was a penial colony of the Ennis factions
Planet 6 - has 3 moons
Planet 7 - no moons.

Updated information (non-canon)
Planet 1 type B - no moons
Planet 2 type G- 1 moons
Planet 3 type K - 1 moon
Planet 4 type N- 3 moons
Planet 5 type O - 4 moons
Planet 6 type H - 3 moons
Planet 7 type F - no moons

Starbase Gamma orbits Planet 5