Magnetic FieldModerate Activity
Why is this a Ice Giant?Your planet has moderate mass (5.8x 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: 5.8x 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 oceansgeology100
Active geology recycles nutrients and drives carbon cycle (tidal flexing sustains geologic activity)rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone onlyOrganic Chemistry100
All CHNOPS elements present - building blocks of life (tidal pools cycle wet and dry - a boost for prebiotic chemistry)atmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)temperature20
Very cold - water frozen, challenging for lifemagnetic Field100
Magnetic field provides radiation protection Physical Properties
Mass
5.80x Earth (3.46e+25 kg)Radius
1.80x Earth (11,447 km)Surface Gravity
1.80x Earth (17.6 m/s²)Surface Temperature
167 K (-107 °C / -160 °F)Rotation Period
11.0 hours/day (faster than Earth)Orbital Environment
Star Type
G-type (Yellow (Sun-like))Distance from Star
4.43 AU (663 million km)Atmosphere
Hydrogen and helium with water, methane, and ammonia ices
Surface Characteristics
Icy mantle surrounding rocky core, with hydrogen-helium atmosphereMoonsLife may exist on a moon
Moon 1rings0.010% - 3.2 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 2stable0.010% - 13.0 radii
Small and distant: a quiet, stable companion.
Tidal braking locked the planet to its moon: one face forever moonward.
Moon 3stable0.010% - 19.8 radii
Small and distant: a quiet, stable companion.
Moon 4recedingOcean world - life0.079% - 8.0 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, 78/100).
Moon 5stable0.010% - 30.2 radii
Small and distant: a quiet, stable companion.
Moon 6stable0.010% - 45.9 radii
Small and distant: a quiet, stable companion.
Moon 7stable0.010% - 69.8 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