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: 3.78 AU, 361K 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 Chemistry100
All CHNOPS elements present - building blocks of life
atmosphere16
Atmosphere present but composition not ideal for life (partially stripped by slow rotation)
temperature0
Extreme temperature - very difficult for 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
3.50x Earth (2.09e+25 kg)
Radius
1.52x Earth (9,673 km)
Surface Gravity
1.52x Earth (14.9 m/s²)
Surface Temperature
361 K (88 °C / 190 °F)
Rotation Period
16.0 hours/day (faster than Earth)
Orbital Environment
Star Type
A-type (Blue-White)
Distance from Star
3.78 AU (565 million km)
Orbital Period
5.20 years
Atmosphere
Volcanic outgassing - sulfur compounds and vaporized rock
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Tidal braking locked the planet to its moon: one face forever moonward.
Moon 2merged2.8% - 19.8 radii
Merged with an adjacent moon: too close for both to hold a stable orbit.
Moon 3receding0.50% - 91.9 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
+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)
