Magnetic FieldModerate Activity
Why is this a Ice Giant?Your planet has moderate mass (7.7x 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: 7.7x Earth (5-20x range)✓ Water/Carbon/Nitrogen rich composition
Habitability ScoreMarginal
Contributing Factorswater15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceansgeology90
Active geology recycles nutrients and drives carbon cyclerotation30
Very slow rotation - severe temperature swings between eternal day and night sidesOrganic Chemistry84
Core organic elements (CHNO) present (tidal pools cycle wet and dry - a boost for prebiotic chemistry)atmosphere18
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)temperature40
Extreme temperature - very difficult for lifemagnetic Field100
Magnetic field provides radiation protection Physical Properties
Mass
7.70x Earth (4.60e+25 kg)Radius
1.97x Earth (12,581 km)Surface Gravity
1.97x Earth (19.4 m/s²)Surface Temperature
236 K (-38 °C / -36 °F)Rotation Period
16.0 hours/day (faster than Earth)Orbital Environment
Star Type
G-type (Yellow (Sun-like))Distance from Star
4.54 AU (679 million km)Atmosphere
Hydrogen and helium with water, methane, and ammonia ices
Surface Characteristics
Icy mantle surrounding rocky core, with hydrogen-helium atmosphereMoons
Moon 1stableOcean world0.010% - 7.6 radii
Small and distant: a quiet, stable companion.
A thin tidal-warmed subsurface ocean may exist, but conditions are marginal (2/100).
Moon 2stable0.010% - 13.6 radii
Small and distant: a quiet, stable companion.
Moon 3merged0.010% - 2.3 radii
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 4rings0.010% - 2.1 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 5rings0.010% - 2.6 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry