Why is this a Lava World?A moon inside the synchronous orbit spiraled in and struck the planet. The impact remelted the surface into a global magma ocean.
Tidal decay drags close-in moons down over millions of years. A large enough impactor liquefies the crust, strips atmosphere, and resets the surface - whatever the orbit's temperature would otherwise allow.
Classification Criteria:
✓ Moon inside the synchronous orbit (tidal decay)✓ Impactor massive enough to remelt the crust- Orbit itself was fine: 5.00 AU, 1400K equilibrium
Habitability ScoreUninhabitable
0
Contributing Factors
water14
Good water content - boiling away, little would be retained
geology50
Extreme volcanic activity may be hazardous (impact-resurfaced crust)
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere9
Atmosphere present but composition not ideal for life (partially stripped by slow rotation) (atmosphere partially stripped by the moon impact)
temperature0
Inferno world - temperatures exceed all possibility of life (runaway tidal heating keeps the surface molten regardless of orbit)
magnetic Field100
Magnetic field provides radiation protection
Physical Properties
Mass
10.10x Earth (6.03e+25 kg)
Radius
2.16x Earth (13,772 km)
Surface Gravity
2.16x Earth (21.2 m/s²)
Surface Temperature
1,400 K (1,127 °C / 2,060 °F)
Rotation Period
10.0 hours/day (faster than Earth)
Orbital Environment
Star Type
G-type (Yellow (Sun-like))
Distance from Star
5.00 AU (748 million km)
Orbital Period
11.2 years
Atmosphere
Vaporized rock and impact ash - the original atmosphere blown off by the strike
Elemental Composition
H - Hydrogen
53.8%
He - Helium
32.3%
C - Carbon
5.4%
Surface Characteristics
Surface remelted by a catastrophic moon impact - a global magma ocean cooling into scarred rock