Magnetic Field Moderate Activity
Why is this a Ice Giant? Your planet has moderate mass (17.0x 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: 17.0x Earth (5-20x range) ✓ Water/Carbon/Nitrogen rich composition
Habitability Score Uninhabitable
Contributing Factors water 60
Water present but mostly frozen 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 84
Core organic elements (CHNO) present (tidal pools cycle wet and dry - a boost for prebiotic chemistry) atmosphere 12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation) temperature 10
Frozen world - minimal potential for complex life magnetic Field 100
Magnetic field provides radiation protection Physical Properties Mass
17.00x Earth (1.02e+26 kg) Radius
2.57x Earth (16,382 km) This planet: 2.57× Earth radius Earth: 1× (baseline)
Surface Gravity
2.57x Earth (25.2 m/s²) Surface Temperature
95 K (-178 °C / -289 °F) Rotation Period
16.0 hours/day (faster than Earth) This planet: 16 h/day Earth: 24 h/day Orbital Environment Star Type
G-type (Yellow (Sun-like)) Distance from Star
19.40 AU (2.9 billion km) Atmosphere Hydrogen and helium with water, methane, and ammonia ices
Surface Characteristics Icy mantle surrounding rocky core, with hydrogen-helium atmosphere Moons
Moon 1 rings 0.010% - 3.2 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 2 stable Ocean world 0.014% - 6.7 radii
Small and distant: a quiet, stable companion.
Tidal braking locked the planet to its moon: one face forever moonward.
A thin tidal-warmed subsurface ocean may exist, but conditions are marginal (15/100).
Moon 3 stable Ocean world 0.043% - 10.6 radii
Small and distant: a quiet, stable companion.
A thin tidal-warmed subsurface ocean may exist, but conditions are marginal (7/100).
Moon 4 receding 0.074% - 16.4 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Moon 5 receding 0.10% - 26.6 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Moon 6 receding 0.065% - 77.7 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry