Why is this a Brown 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: 4186.0x EarthTemperature: 616K
Habitability ScoreUninhabitable
0
Contributing Factors
water15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans
geology40
Geologically dead - no nutrient recycling (tidal flexing sustains geologic activity)
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)
temperature5
Scorching - hot enough to melt lead, though rock stays solid; no chance for life
magnetic Field100
Magnetic field provides radiation protection
Physical Properties
Mass
4186.00x Earth (2.50e+28 kg)
Radius
16.12x Earth (102,677 km)
Surface Gravity
16.12x Earth (158.1 m/s²)
Surface Temperature
616 K (343 °C / 649 °F)
Rotation Period
2.0 hours/day (faster than Earth)
Orbital Environment
Star Type
F-type (White)
Distance from Star
367.40 AU (55 billion km)
Orbital Period
6,176 years
Atmosphere
Hydrogen and helium dominated by methane absorption, with water clouds below
Elemental Composition
H - Hydrogen
56.0%
He - Helium
34.0%
C - Carbon
4.0%
Surface Characteristics
No surface: a cooling failed star, its methane atmosphere absorbing so much red light it would look magenta to the eye