Dir-Vanus

The Dir-Vanus System a binary star system located in the Perseus Arm of the Milky Way nearly 400 light years from Earth.

Dir
The star Dir is a G-type main sequence star similar to Sol. At around 1.07 solar masses, it is the bigger and brighter star in the binary. In ancient Gox mythology, Dir was one of two sun gods, the other being their sibling, Vanus. Dir was the elder, brighter sibling, but ruled the heavens equally with their sibling.

Vanus
The K-type star Vanus is the smaller star in the binary, at only 0.75 solar masses. In myth, Vanus was the younger and dimmer of the two sun gods, but they shared domain of the heavens equally with Dir.

Ran
The first planet and the second largest rocky planet of the system orbits the twin stars once every three Earth days. It has no moons. It has an unusually thick hydrogen atmosphere that, due to its proximity to the twin stars, it is slowly losing to the solar wind. Because of this, prevailing hypotheses suggest that the planet may have once been a small gas giant, and may be a cthonian planet in the making.

It is named after a divine beast from an extinct Gox religion that guarded the twin sun gods and heralded their arrival each morning. From Ixara, the planet can be seen most clearly in the first half hour preceding sunrise, and can be seen during the day with the help of a glare-blocking telescope.

Korus
The smallest rocky planet in the system at 0.66 Earth masses. It orbits much farther out than Ran at 0.72 au. Like Ran, it has no moons. Unlike Ran, however, it is a barren, crater-filled planet with no atmosphere.

Xarti
Only marginally smaller than Ran, it is similarly barren. It has 4 minor moons with highly elliptical orbits, likely captures from the asteroids that frequently cross its orbit. Despite its proximity to Ixara, it reflects sunlight poorly due to its carbonaceous crust.

Ixara
Main Article: Ixara

Dir-Vanus's largest rocky planet and the only one that is habitable, Ixara is the homeworld of the Gox and capital of the Ixaran Directorate. It also holds the title of possessing one of the most hostile and competitive biospheres known to the Galaxy, with the highest number of leviathan-class predators among the Assembly homeworlds. It has two spherical, differentiated moons, Roikh and Caxus.

Frikaz
On the other side of the system's 2 au-wide asteroid belt lies the system's largest gas giant. Significantly more massive than Sol's Jupiter and possessing ring system to rival Saturn, it is the brightest object in the Ixaran night sky after Roikh and Caxus. It possesses nearly a hundred moons, including 10 major moons. While most of these moons are either iceballs or barren Korus clones, one of them, Luxis, is a Venusian hothouse

Taxos
The outermost planet of the system is an ice giant more twice as massive as Neptune. It also has a prominent ring system, but not as spectacular as those Frikaz.