There is a star 1.2 solar masses. Around this star are 7 planets. One of those is a gas giant within the star's habitable zone. It has seven major moons and many minor moons. Of the major moons, one of the inner moons is life-bearing.
Star - 1.2 solar masses, density, age, brightness etc., 7 planets
Planet - Gas giant, 1.49AU orbital radius, 5 Jupiter masses, rings, 7 major moons, many minor moons, 6.8g/cc density
Moon - 605.10 days per year, 29.6 hours per day, 570,000km orbital radius?