Zaria

Alkonost
 * Alkonost is an enormous, low-density terrestrial planet, with a thick atmosphere of methane and helium. Despite being a distance from Zaria, the star's great heat and the insulating thickness of the atmosphere make the surface surprisingly temperate.

Canrum Junthor Rayingri
 * The crust is mainly composed of sodium and silicon dioxide with deposits of various light metals. While Alkonost is not habitable, it would be a suitable target for terraforming.
 * Canrum is a small, rocky world with a trace atmosphere of methane and krypton. Its surface is mainly composed of magnesium and silicates with deposits of carbon.
 * Junthor is a large terrestrial planet with a thick atmosphere of carbon dioxide and chlorine. The surface is mainly composed of aluminium with deposits of nickel.
 * Rayingri is a small, barren terrestrial world. It possesses a reasonably temperate climate and a number of useful resources.

Syba
 * A rogue planetoid entered the system approximately ten thousand years ago, and was trapped in a decaying orbit around Rayingri. It is nearing the end of its slow spiral inwards. Earthquakes and cyclonic windstorms are increasingly common on Rayingri. Within a few hundred years, the planets will rip each other apart.
 * Syba is a standard Neptune-type gas giant, the upper cloud decks of its hydrogen-helium atmosphere tinted a dramatic blue by traces of methane.