Ice Giant 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 15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans geology 100
Active geology recycles nutrients and drives carbon cycle (tidal flexing sustains geologic activity) 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 0
Near absolute zero - all molecular activity ceases, impossible for 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
34 K (-239 °C / -398 °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
150.00 AU (22.4 billion km) Orbital Period
1,837 years 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 0.032% - 2.2 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 0.00028% - 7.9 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, 76/100).
Moon 3 stable 0.00025% - 15.8 radii
Small and distant: a quiet, stable companion.
Moon 4 merged 0.079% - 8.2 radii
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 5 stable 0.00071% - 57.9 radii
Small and distant: a quiet, stable companion.
Moon 6 stable 0.0018% - 6.4 radii
Small and distant: a quiet, stable companion.
+10 geology: tidal flexing sustains geologic activity +4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry