Selish system

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Mashe is a star in the cosmere. There are four planets and a dwarf planet orbiting Mashe. It also has an asteroid belt and a comet belt.

Planetary System

Khriss calls Mashe's planetary system the Selish system, named after the second planet orbiting the star. The system contains four known planets in total and one dwarf planet on the edge of the system.

Donne

The planet closest to Mashe. While within the system's habitable zone, the planet is barren, uncomfortably warm, and prone to terrible dust storms. Donne is also known as Doo.

Sel

This is a Shardworld containing the Shards of Devotion and Dominion. Sel has thriving human civilizations that have produced multiple empires and that make use of various manifestations of Investiture. The planet is also called Seol, perhaps from the Aon Seo meaning "loyalty" or "service". It has one moon, Oem. Beyond Sel lies an asteroid belt.

Ky

Located after the asteroid belt, Ky appears to be a gas giant with four moons. It is also known is Kii, which is the Aon for "justice".

Ralen

A gas giant with four moons and a ring system. Ralen appears to be the largest planet in the Selish system. It is also called Raa.