Kao-Raish System

The Kao-Raish system is located on the Rahmke-Tar Arm near the center of the Rahmta Reshem Spiral Galaxy, which formed approximately 20 billion years ago. It is a binary star system which consists of a stable white star Kao, and its companion star Raish, a stable red star. The pair orbit a common barycenter which is closer to Kao than Raish.

Suns

Kao is a F-type main sequence star with a F1V Stellar classification, and is approximately 1.1 solar masses, and is approximately 1.2 solar radii. It is 2.2 billion years old.

Raish is a M-type main sequence star with a M2V Stellar classification, and is approximately 0.4 solar masses, and is approximately 0.7 solar radii. It is 2.1 billion years old.

Planets

The Kao-Raish system is a six planet system with two asteroid belts with two planets within its habitable zone:

Parfih is the closest planet to Kao and is the smallest planet in the solar system. Parfih has almost no atmosphere and a relatively large iron core. It has no satellites.

Karnim is the second planet from Kao and slightly larger than Earth. It has a small iron core with a thick outer crust and a toxic sulfur atmosphere. It has one small moon.

Mutuk is the third planet from Kao and slightly smaller than Earth. It has an average-sized iron core with a thick outer crust and a habitable atmosphere. It has a large amount of water on its surface, and most of the planet's surface is swampy. It has one small moon. It is the first planet in the system's habitable zone. Though the planet is habitable, the only notable life is plant-life.

Sarsei is the fourth planet from Kao and is approximately the same size as Earth. It has an average-sized iron core with a thicker outer crust and a habitable atmosphere. About 73% of its surface is water, and has several land-masses. It is the second planet in the system's habitable zone, and is the only planet in the system with advanced life forms. One full rotation of Sarsei takes 12 Sarseian hours, and each Sarseian hour is broken into 144 Sarseian minutes, and each minute further broken up into 144 Sarseian seconds, which are roughly equivalent to 2/3 of an Earth second, meaning a Sarseian day is approximately 50% longer than an Earth day. It takes 576 Sarseian days to orbit Kao, making one Sarseian year approximately 2.3 times the length of an Earth year. Sarsei has two tidally-locked moons, Vaylei and Hansha.

Vaylei, the larger moon, drives most of the tides and causes some seismic activity as it passes conjunction with Kao and Raish. It fills one sixth of Sarsei's night sky, making eclipses both commonplace and mundane. However, it is anything but mundane for as it passes through and influences Sarsei's magnetic fields, it generates spectacular auras. Vaylei takes 12 Sarseian days to orbit Sarsei.

Hansha, the smaller moon, orbits Sarsei at a greater distance and has little seismic or tidal influence on Sarsei. Its orbit is 15 degrees off axis from Vaylei's. It fills one tenth of Sarsei's night sky, when it isn't obscured by Vaylei. Hansha takes 144 Sarseian days to orbit Sarsei.

Due to Vaylei and Hansha's orbits falling on a 12-day and 144-day period respectively, the 576-day year is broken up into four seasons, beginning when both Vaylei and Hansha are full. These seasons are 144 days, and are further broken up based on Vaylei's 12-day cycle, each week beginning when Vaylei is full. When Vaylei and Hansha do not block the night sky, the inhabitants are able to see a dense swath of stars due to their position near the center of the spiral galaxy.

The activity of the moons and suns churn the oceans such that polar ice caps rarely form, though in-land glaciers are frequently found along the frigid southern pole. The northern pole, on the other hand, being aligned with the sun for the majority of the year, is significantly warmer than the southern pole, but both north and south poles are habitable.

Soboo is the fifth planet from Kao and is a gas giant several times Earth's diameter. It has nine moons. The Tahm asteroid belt appears to consist of many asteroids and pieces of a previously obliterated planet. It has several moon-sized asteroids amidst its debris.

Kumak is the sixth and final planet from Kao. It is also a gas giant many times Earth's diameter. It has 11 moons and an ice belt. The Kuf asteroid belt is the final feature in the Kao-Raish system, and is a huge spherically-scattered field of debris that surrounds most of the system and makes access in or out of the system very difficult. It consists mostly of debris smaller than 50km, but there are larger pieces of debris, and much of it consists of ice or ice surrounding chunks of rock.

Dust Cloud (Undiscovered)

The larger, white main sequence star in the Kao-Raish system.

The smaller, red main sequence star in the Kao-Raish system.

The fourth planet in the Kao-Raish star system. The only known inhabited planet.

Sapient feliform race inhabiting Sarsei

The larger of the two moons orbiting Sarsei.

The larger of the two moons orbiting Sarsei.