Small Giant
0
Gas Dwarf
✦ Outerwilds solar systemMagnetic 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: 8.2x EarthTemperature: 91K
Habitability ScoreUninhabitable
Contributing Factors
water50
Limited water content
geology70
Some geological activity provides slow nutrient cycling (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)
temperature10
Frozen world - minimal potential for complex life
magnetic Field100
Magnetic field provides radiation protection
Physical Properties
Mass
8.20x Earth (4.90e+25 kg)Radius
2.02x Earth (12,847 km)Surface Gravity
2.02x Earth (19.8 m/s²)Surface Temperature
91 K (-183 °C / -297 °F)Rotation Period
10.0 hours/day (faster than Earth)Orbital Environment
Star Type
G-type (Yellow (Sun-like))Distance from Star
9.42 AU (1.41 billion km)Atmosphere
Deep hydrogen-helium envelope with photochemical haze
Elemental Composition
H - Hydrogen
55.0%
He - Helium
32.0%
O - Oxygen
5.0%
Surface Characteristics
No solid surface - a thick gas envelope wrapped around a small deep core (a mini-Neptune)Closest Real Exoplanet
GJ 1151 c81% similar
Orbiting GJ 1151| Yours | GJ 1151 c | |
|---|---|---|
| Mass | 8.20 × Earth | 10.6 × Earth |
| Radius | 2.02 × Earth | 3.25 × Earth |
| Temperature | 90.6 K | 88.0 K |
| Starlight received | 0.01 × Earth | 0.01 × Earth |
| Star temperature | 5,600 K | 3,280 K |
MoonsLife may exist on a moon
Moon 1recedingOcean world0.080% - 6.0 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Tidal braking locked the planet to its moon: one face forever moonward.
A thin tidal-warmed subsurface ocean may exist, but conditions are marginal (22/100).
Moon 2recedingOcean world - life0.10% - 9.5 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Tidal heat sustains a subsurface ocean over a rock seafloor: a strong candidate for life (Europa-like, 96/100).