Mandalore was a terrestrial planet located in the Mandalore system, a part of the Mandalore sector in the New Territories portion of the galaxy’s Outer Rim Territories. It was positioned at the coordinates O-7 on the Standard Galactic Grid with the closest trade route to the world being the Hydian Way. Mandalore occupied the fifth orbit around its eponymous yellow sun and had a rotational period of nineteen standard hours, and its standard year lasted three hundred and sixty-six standard days. The planet possessed standard gravity and two moons, including the one time mining base and agricultural center, Concordia.

The planetary surface was once lush with jungles, forests, seas, mountains, and jewel-colored lakes, but was eventually transformed into a lifeless desert, with hot and dry climate, though was hospitable enough to hold life and let a race of people thrive. During the Great Purge of Mandalore, the Galactic Empire bombed the planet with fusion bombs and fusion rays, crystallizing and glassing the surface of the planetinto trinitite. The fusion bombs also disrupted the magnetic field around the planet, making it impossible to communicate with anyone out of atmosphere. The atmosphere also became stormy.