Serenno was a terrestrial planet located in the D’Astan sector’s Serenno system, in the Northern Dependencies of the Outer Rim Territories, in grid square P-5 on the Standard Galactic Grid. Serenno orbited a singular star and was orbited by two moons, including the moon of Mantero.

The planet sat at a prime point along a maze of key hyperspace lanes, close to the planet Toprawa and the Corporate Sector that lay to the northeast, at the very start of the Hydian Way super-hyperroute. To the east sat the vast Gordian Reach and, within it, the Yavin system, while Mandalorian space lay south. A direct route down the Hydian Way to Brentaal IV would mean a short jump across to the planet Coruscant and the galactic seat of power. It was also situated along the Spurs of Celanon.