Magnetic Field Moderate Activity
Why is this a Ice Giant? Your planet has moderate mass (12.0x Earth) with significant water, carbon, and nitrogen content, characteristic of ice giants. Ice giants like Uranus and Neptune have icy interiors with thick atmospheres of hydrogen and helium, but not enough to be classified as gas giants.
✓ Mass: 12.0x Earth (5-20x range) ✓ Water/Carbon/Nitrogen rich composition
Habitability Score Marginal
Contributing Factors water 15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans geology 90
Active geology recycles nutrients and drives carbon cycle rotation 10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only Organic Chemistry 80
Core organic elements (CHNO) present atmosphere 12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation) temperature 40
Extreme temperature - very difficult for life magnetic Field 100
Magnetic field provides radiation protection Physical Properties Mass
12.00x Earth (7.17e+25 kg) Radius
2.29x Earth (14,586 km) This planet: 2.29× Earth radius Earth: 1× (baseline)
Surface Gravity
2.29x Earth (22.5 m/s²) Surface Temperature
200 K (-73 °C / -99 °F) Rotation Period
22.0 hours/day (faster than Earth) This planet: 22 h/day Earth: 24 h/day Orbital Environment Distance from Star
10.50 AU (1.57 billion km) Atmosphere Hydrogen and helium with water, methane, and ammonia ices
Surface Characteristics Icy mantle surrounding rocky core, with hydrogen-helium atmosphere Moons Life may exist on a moon
Moon 1 rings 0.079% - 3.4 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 2 receding Ocean world - life 0.14% - 7.2 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Tidal braking locked the planet to its moon: one face forever moonward.
Tidal heat sustains a subsurface ocean over a rock seafloor: a strong candidate for life (Europa-like, 77/100).