Adranus system

Adranus and Kresnik

## Overview

The Adranus system is a system of 2 brown dwarfs, 6.5 lightyears, or 2 parsecs away from the Sol system. The system was formerly known as Luhman 16, but was named in 2038.

The system itself is composed of 2 relatively low-mass brown dwarfs, Adranus, formerly known as Luhman 16 A, and Kresnik, formerly known as Luhman 16 B. They are ~3.5 AU apart, and have 17 additional planets, 6 of which are circumbinary.

## Planetary systems

Adranus (98.16 million inhabitants around it)

* Peklenc: A mini-neptune orbiting Adranus every day, precisely. 0.0062147 AU, 1.7 million inhabitants
* Barastyr: A tidally locked Venus-esque super-earth weighing as much as Peklenc, but 55% its size. It has an atmosphere ~600 times thicker than Earth's, allowing temperatures to soar to ~860 degrees Celsius and so a dark red glow from beneath the clouds. 0.009866 AU, 60,000 inhabitants
* Degei: A tidally locked Mars-esque planet, but with an atmosphere mainly made from water vapour and sulphur compounds, such as hydrogen sulphide and sulphur dioxide. 0.015662 AU, 4.1 million inhabitants
* Tlaloc: A tidally locked waterworld slightly larger than Earth. It has a relatively breathable atmosphere. 0.02486 AU, 13.3 million inhabitants.
* Atlahua: A tidally locked ice world with rings. There are an unusually large amount of domed cities. 0.062651 AU, 29.5 million inhabitants.
* Ehecatl: A large super-neptune and the most distant planet orbiting Adranus. 0.0994584625 AU, 52.9 million inhabitants.

Kresnik

* Xolotl: A mars-sized planet orbiting extremely close to Kresnik. It's tidally locked, and so close that one side is covered in lava and the other, in ice. It races around Kresnik in a mere 10 hours. 0.0034 AU, no inhabitants
* Danu: The capital of the whole star system. Danu is a non-tidally locked Earth-sized terra orbiting Kresnik in its habitable zone. 0.00856853 AU, 316.8 million inhabitants
* Toci: A large, puffy ocean planet. Terraforming started in 2657. 0.0136 AU, 85.3 million inhabitants
* Borvo: A cold rocky planet similar to Mercury but larger. 0.021594 AU, 11.3 million inhabitants
* Vasio: A gas dwarf. 0.05442 AU, 34.8 million inhabitants

Circumbinary

* Issibaeo: Ringed ice world. 17.49 AU, 5.3 million inhabitants
* Crouga: A large saturn-sized gas giant. 29.86 AU, 41.6 million inhabitants.
	+ Losa: A temperate desert moon with a thin atmosphere and a bit of liquid water. 32.6 million inhabitants
	+ Tava: An ice moon. 11.5 million inhabitants
	+ Reue: Another ice moon. 2.1 million inhabitants
* Kuanikio: A neptune-mass planet on a strangely eccentric orbit. 47.15 AU, 14.9 million inhabitants
	+ Aetio: Ice moon. 1.6 million inhabitants
* Araco: A large 1.3 jupiter mass gas giant. Its upper atmosphere is very balmy, at a nice ~24 degrees Celsius, so it has almost the same number of inhabitants as Danu. 79.38 AU, 246 million inhabitants
	+ Bandua: Hot desert moon. No inhabitants
	+ Cohue: Ocean moon. 3.9 million inhabitants
	+ Deiba: Ice moon. No inhabitants
	+ Coruae: Ice moon. No inhabitants
	+ Erriapus: Ice moon. No inhabitants
* Gwern: A titan-esque planet with oceans of hydrogen. 130.35 AU, 5.6 million inhabitants
	+ Afallach: Ice moon, 300,000 inhabitants

## Missions

The first manned mission to this system arrived in 2136, and it landed on Danu (obviously).

The next few manned missions were still to Danu, but the first manned mission to a celestial body other than danu was in 2150, to Tlaloc. Then the humans slowly spread around the system.