Why is this a Lava World?Runaway tidal heating from its moons keeps the surface molten - the planet is kneaded like Io, only far harder.
Resonant, close-in moons pump orbital eccentricity, and the resulting tidal flexing dissipates enormous heat in the interior. Past a threshold the crust cannot cool: volcanism resurfaces the world continuously.
Classification Criteria:
✓ Close-in moons in a resonant configuration✓ Tidal heat flux beyond the runaway threshold- Orbit itself was fine: 12.00 AU, 1259K equilibrium
Habitability ScoreUninhabitable
0
Contributing Factors
water50
Limited water content
geology40
Extreme volcanic activity may be hazardous
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere16
Atmosphere present but composition not ideal for life (partially stripped by slow rotation)
temperature0
Inferno world - temperatures exceed all possibility of life (large moon stabilizes the axial tilt - steady seasons) (runaway tidal heating keeps the surface molten regardless of orbit)
magnetic Field100
Magnetic field provides radiation protection (a large close moon may help stir the core dynamo (speculative))
Physical Properties
Mass
6356.00x Earth (3.80e+28 kg)
Radius
18.52x Earth (118,015 km)
Surface Gravity
18.52x Earth (181.7 m/s²)
Surface Temperature
1,259 K (986 °C / 1,806 °F)
Rotation Period
5.0 hours/day (faster than Earth)
Orbital Environment
Star Type
M-type (Red Dwarf)
Distance from Star
12.00 AU (1.8 billion km)
Orbital Period
75.9 years
Atmosphere
Volcanic outgassing - sulfur compounds and vaporized rock
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 2stable0.010% - 2.7 radii
Small and distant: a quiet, stable companion.
Tidal braking locked the planet to its moon: one face forever moonward.
Moon 3stable0.010% - 4.1 radii
Small and distant: a quiet, stable companion.
Moon 4merged0.025% - 4.8 radii
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 5recedingOcean world - life1.1% - 14.8 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, 73/100).
Moon 6stable0.010% - 29.3 radii
Small and distant: a quiet, stable companion.
+5 temperature: large moon stabilizes the axial tilt - steady seasons-85 temperature: runaway tidal heating keeps the surface molten regardless of orbit+5 magneticField: a large close moon may help stir the core dynamo (speculative)
