66 Alggiona

66 Alggiona' (also nicknamed "The Metal Sun") is a small and bizarre type of star known as a Frozen Star. Located near the outer edge of the Milky Way, 66 Alggiona formed with so much metals that it became more of a giant planet than a star. It is powered by both nuclear fusion and radioactive decay in its searing core. However, 66 Alggiona is a very cool star with a surface temperature of just 308 degrees Kelvin. As a result, it is given the spectral classification of H7. It is one of only 33 documented frozen stars, and the only one in the Milky Way.

Discovered in 10,073 CE by a rogue space probe, 66 Alggiona has been a hotspot for extragalactic scientists, who have come to study the star and its three planets. The second planet, Gerbi, has been placed under environmental protection to preserve its fragile and exotic ecosystem.

Discovery

In 10,073 CE, a rogue probe that had fulfilled its mission drifted within 2 light years of 66 Alggiona. It first recognised the star as a Y-class brown dwarf, but that was immediately ruled out due to the sheer mass and the observed age of the star. As a result, the probe ventured closer and closer until a photo of the star could be taken. The result was something very enigmatic - a black sphere with vague red patches, resembling a hot terrestrial planet, but with a lot of material in its surroundings.

As soon as the pictures of the star were sent back to Earth-bound observatories, astronomers were very excited as this star seemed to fit the model for how a frozen star may look. And next stop... intense study in every way possible. Many spectra were recorded of this star, which confirmed its status as a frozen star.

What was even more interesting, was that one team of astronomers, working on the moon, had seemingly detected dips of light that were independent from the erratic patches scattered across the star, and may have been caused by planets! This just blew the entire field of exoplanetology up, and within a week, the 3 planets' characteristics were known as well as they could've been known, with mass, size and orbit fully characterised.

After more observation, it was concluded that 66 Alggiona c had a thick atmosphere, which was characterised as well. It seemed to have hydrogen, helium and some neon and nitrogen and oxygen floating around. This, as well as its distance from its sun, meant that pools of exotic liquid neon could form there. As a result of this, several more expeditions were sent to this strange little star and its even stranger planetary system.

Planetary System

66 Alggiona has a relatively small planetary system, which just seems small due to pure coincidence.

Konae: A cold, tidally locked I-class world with a thin atmosphere. It has a subglacial ocean and frequent tectonic activity from tidal heating from 66 Alggiona and the other two planets.
Gerbi: The second of the three planets, Gerbi is a small T-class world only slightly larger than Konae. Due to being so cold, it has seas of neon. Gerbi has huge, exotic ecosystems of carbon-based life that rely on neon as a solvent.
Eriest: A small gas dwarf with one very prominent band. Eriest is tidally locked, and there is a permanent storm raging on the side facing 66 Alggiona. When the band runs through it, it is disturbed and creates a number of smaller storms. Eriest is extremely cold and looks orange, with neon and hydrogen clouds and neon rain.