Mortuus (Barrinion System)
by MAGGas Dwarf
Magnetic FieldLow Activity
Why is this a Gas Dwarf?Your planet has an unusual composition that doesn't fit standard classifications, or lacks the elements needed for complex geological processes.
Barren worlds can form from uncommon element combinations or may be remnants of larger bodies that lost their atmospheres and volatile materials.
Classification Criteria:
Composition doesn't match standard planet typesMass: 9.8x EarthTemperature: 336K
Habitability ScoreMarginal
Contributing Factors
water20
Very dry - minimal water
geology60
Some geological activity provides slow nutrient cycling
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry54
Carbon and hydrogen present - organic chemistry possible (tidal pools cycle wet and dry - a boost for prebiotic chemistry)
atmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)
temperature75
Challenging but potentially habitable temperature (large moon stabilizes the axial tilt - steady seasons)
magnetic Field100
Magnetic field provides radiation protection
Physical Properties
Mass
9.80x Earth (5.85e+25 kg)Radius
2.14x Earth (13634 km)Surface Gravity
2.14x Earth (21.0 m/s²)Surface Temperature
336 K (63 °C / 145 °F)Rotation Period
1.0 hours/day (faster than Earth)Orbital Environment
Star Type
F-type (White)Distance from Star
1.68 AU (251324423 million km)Atmosphere
Deep hydrogen-helium envelope with photochemical haze
Elemental Composition
H - Hydrogen
72.5%
He - Helium
21.2%
O - Oxygen
1.0%
Surface Characteristics
No solid surface - a thick gas envelope wrapped around a small deep core (a mini-Neptune)Moons
Moon 1receding0.51% - 54.4 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Tidal braking locked the planet to its moon: one face forever moonward.
Moon 2merged10% - 100.0 radii
Merged with an adjacent moon: too close for both to hold a stable orbit.