Magnetic Field Extreme Activity
Why is this a Gas Giant? Your planet has 40.6% hydrogen and helium, combined with a mass of 17.0x Earth, which exceeds the gas giant threshold. Gas giants form when massive cores capture enormous atmospheres of light gases. They typically form beyond the 'frost line' where volatiles can condense.
✓ Hydrogen + Helium: 40.6% (>60% required) ✓ Mass: 17.0x Earth (>10x required)
Habitability Score Uninhabitable
Contributing Factors water 15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans geology 50
Extreme volcanic activity may be hazardous (impact-resurfaced crust) rotation 10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only Organic Chemistry 80
Core organic elements (CHNO) present atmosphere 10
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation) (atmosphere partially stripped by the moon impact) temperature 25
Very cold - water frozen, challenging for life (large moon stabilizes the axial tilt - steady seasons) 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
122 K (-151 °C / -240 °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
6.71 AU (1 billion km) Atmosphere Hydrogen and helium dominated with trace methane and ammonia
Surface Characteristics No solid surface - thick gaseous envelope with possible rocky core deep within Moons Life may exist on a moon
Moon 1 rings 0.045% - 1.8 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 2 merged 0.079% - 4.9 radii
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 3 crashed 0.089% - 4.5 radii
Inside the synchronous orbit: tidal decay dragged it down - it struck the planet ages ago.
Moon 4 receding Ocean world - life 0.56% - 11.0 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, 66/100).
+5 temperature: large moon stabilizes the axial tilt - steady seasons -2 atmosphere: atmosphere partially stripped by the moon impact +10 geology: impact-resurfaced crust