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.
Fgetasb Characteristics
Mass: 1.080 Msol
Radius: 1.046 Rsol
Luminosity: 1.403 Lsol
Color Temperature: 6130K
Spectral Class: F9V
Age: 4,729 Myr (4,203 Myr since ZAMS)
Habitable Zone: 1.131 - 1.629 AU
Scudegæ is a barren, inhospitable rock, comparable to both Mercury and Venus. A runaway greenhouse effect has hidden the surface from view.
Scudegæ Characteristics
Mass: 0.094 MEarth
CMF: 47.9%
Density: 5.59 g/cm³
Radius: 0.452 REarth
Gravity: 0.459 g = 4.505 m/s²
Axial Tilt: 52.8º
Average Surface Temperature: 986 ºC
Semi-major Axis: 0.319 AU
Eccentricity: 0.112
Periapsis: 0.283 AU
Apoapsis: 0.355 AU
Day Length: 1,013.18 hr
Year Length: 63.324 Earth days = 1.500 Scudegæ days
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.
Ceƿturfe Belt Characteristics
Total Mass: 0.00142 MEarth
Average Density: 4.12 g/cm³
Range: 0.698 - 0.937 AU
The Ceƿturfe Belt has no spherical objects. It only has one protoplanet, named Haggmun.
Haggmun Characteristics
Mass: 2.13×10⁻⁴ MEarth
CMF: 23.1%
Density: 4.51 g/cm³
Dimensions: 315 km × 433 km × 493 km
Gravity: 0.052 g
Average Surface Temperature: 63 ºC
Semi-major Axis: 0.814 AU
Eccentricity: 0.023
Periapsis: 0.795 AU
Apoapsis: 0.833 AU
Year Length: 258.120 Earth days
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.
It has one major moon named Clemsað.
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 AU
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)
The planets Stekram and Æðnule form a double planet system. Both planets are tidally locked to one another.
Stekram-Æðnule System Characteristics
Semi-major Axis: 32,391 km
Eccentricity: 0.328
Periapsis: 21,767 km
Apoapsis: 43,105 km
Month/Day Length: 17.64 hr
SÆ-Fgetasb System Characteristics
Semi-major Axis: 1.953 AU
Eccentricity: 0.012
Periapsis: 1.930 AU
Apoapsis: 1.976 AU
Year Length: 959.266 Earth days = 1,305.123 Stekram / Æðnule days