Ice Giant
Magnetic FieldExtreme Activity
Why is this a Ice Giant?Your planet has moderate mass (9.3x 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: 9.3x Earth (5-20x range)✓ Water/Carbon/Nitrogen rich composition
Habitability ScoreExtremely Harsh
Contributing Factorswater15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceansgeology40
Extreme volcanic activity may be hazardousrotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone onlyOrganic Chemistry100
All CHNOPS elements present - building blocks of lifeatmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)temperature75
Challenging but potentially habitable temperature (large moon stabilizes the axial tilt - steady seasons)magnetic Field100
Magnetic field provides radiation protection Physical Properties
Mass
9.30x Earth (5.55e+25 kg)Radius
2.10x Earth (13,398 km)Surface Gravity
2.10x Earth (20.6 m/s²)Surface Temperature
335 K (62 °C / 143 °F)Rotation Period
30.0 hours/day (slower than Earth)Orbital Environment
Star Type
B-type (Blue Giant)Distance from Star
106.70 AU (16 billion km)Orbital Period
348.5 yearsAtmosphere
Hydrogen and helium with water, methane, and ammonia ices
Surface Characteristics
No solid surface - a deep volatile envelope over a supercritical water mantle and hot-ice interiorMoonsLife may exist on a moon
Moon 1rings0.50% - 1.4 radii
Inside the Roche limit (1.92 planet radii): torn apart into a ring system.
Moon 2rings0.089% - 2.3 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 3recedingOcean world - life0.79% - 10.5 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, 98/100).
Moon 4stable0.032% - 87.6 radii
Small and distant: a quiet, stable companion.
+5 temperature: large moon stabilizes the axial tilt - steady seasons