The Fgetasb System

Fgetasb is a main-sequence, F-type star. It is the brightest object within 30 light years of it. In fact, no star exists within 19 light years away.

Scudegæ

Scudegæ is a barren, inhospitable rock, comparable to both Mercury and Venus. A runaway greenhouse effect has hidden the surface from view.

Ceƿturfe Belt

Instead of an expected planet, all evidence points towards an inner asteroid belt known as the Ceƿturfe Belt. The precise mechanism of its formation is unknown, outside of gravitational perturbations from Roskel.

The Ceƿturfe Belt has no spherical objects. It only has one protoplanet, named Haggmun. It is visible with the naked eye, but only on clear nights with acute vision.

Roskel

Roskel is the only planet in the Fgetasb system to orbit within the star’s habitable zone. In addition, it also has the correct atmosphere and composition to support liquid water and life. Its enourmous mass and the prescense of the Ceƿturfe Belt highly suggests that it formed rapidly before other planets could, likely via giant impacts. Current models suggest that three protoplanets collided together to form Roskel, with a fourth one colliding to create Clemsað, its one moon.

Map of Roskel, equirectangular projection.
Boundaries: 7.5º N - 50.5º S, 29º W - 29º E

Roskel Characteristics

Mass: 1.728 MEarth
CMF: 29.1%
Density: 5.95 g/cm³
Radius: 1.170 REarth = 7,452 km
Gravity: 1.263 g = 12.391 m/s²
Escape Velocity: 13.60 km/s
Axial Tilt: 31.4º
Average Surface Temperature: 10 ºC

Semi-major Axis: 1.227 AU
Eccentricity: 0.058
Periapsis: 1.156 AU
Apoapsis: 1.298 AU
Day Length: 23.13 hr
Year Length: 477.697 Earth days = 495.665 Roskel days

Atmospheric Pressure: 0.88 atm
Atmospheric Composition: 68.06% N2, 30.87% O2, 0.92% Ar, 0.16% CO2
Atmospheric Density: 1.121 kg/m³

Clemsað Characteristics

Mass: 0.973 MMoon
Density: 3.42 g/cm³
Radius: 0.983 RMoon = 1,708 km
Gravity: 0.167 g = 1.63 m/s²
Escape Velocity: 2.368 km/s

Semi-major Axis: 422,942 km
Eccentricity: 0.048
Periapsis: 402,641 km
Apoapsis: 443,243 km
Inclination: 2.31º
Month Length: 25.299 Earth days = 26.251 Roskel days
Tides: 1.19 Earth tides (73% lunar, 27% stellar)

Stekram & Æðnule

The planets Stekram and Æðnule form a double planet system. Both planets are tidally locked to one another. Their closeness causes intense tidal heating, resulting in them being very volcanically active, like Io.

Stekram is the more massive of the two. Despite having a fairly thin atmosphere, it still manages to have some liquid water around its equator. Most water is in the form of ice however, and no life beyond simple microbes appears to be likely.

Æðnule is the less massive and smaller of the two. It is almost completely devoid of volatiles, suggesting a violent collision formed the system

Hapriht

Hapriht is a small, desolate, and very cold planet. It also features various minor moons which are all too unimportant to be worth mentioning.

Geoftun Belt

Lying inside the Geoftun Belt is the frost line at 5.745 AU, used to differentiate between the inner and outer system. To avoid repeating myself I will state here that the gas giants listed below each have various major moons not listed for my sanity.

Ƿaftone

Ƿaftone is the primary gas giant in the Fgetasb system. I have literally nothing else to say about this planet.

Slex

Slex is an ice giant, roughly comparable to Uranus. It is the furthest out planet to be consistently visible in the night sky. It also has a boatload of trojan asteroids for reasons unknown.

Þaskop

Þaskop, in a realm dominated by gas giants, is an unusually small icy planet. It is comparable to Ganymede, only over twenty-three times more massive and not a moon.

Coƿleen

Coƿleen is the furthest out planet in the Fgetasb system. It features a prominant ring system.