Carbon World Magnetic Field Extreme Activity
Why is this a Carbon World? Your planet's carbon (51.7%) outweighs its oxygen (0.0%), so the mineralogy flips from silicate rock to carbide - a graphite crust over a diamond mantle. Carbon worlds form in carbon-rich disks where there isn't enough oxygen to bind it all into silicates. Instead carbon condenses directly into graphite, carbides, and - under pressure at depth - diamond. They form water-poor, so no life takes hold.
✓ Carbon: 51.7% (>=20% required) ✓ Carbon exceeds Oxygen: 51.7% > 0.0% ✓ Mass: 7.3x Earth (<=8x hycean ceiling)
Habitability Score Uninhabitable
Contributing Factors water 0
No water - the recipe has no hydrogen and oxygen to form it geology 40
Extreme volcanic activity may be hazardous rotation 30
Very slow rotation - extreme temperature swings between eternal day and night sides Organic Chemistry 54
Carbon and hydrogen present - organic chemistry possible (tidal pools cycle wet and dry - a boost for prebiotic chemistry) atmosphere 24
Atmosphere present but composition not ideal for life (partially stripped by slow rotation) temperature 40
Extreme temperature - very difficult for life magnetic Field 100
Magnetic field provides radiation protection Physical Properties Mass
7.30x Earth (4.36e+25 kg) Radius
1.94x Earth (12,359 km) This planet: 1.94× Earth radius Earth: 1× (baseline)
Surface Gravity
1.94x Earth (19.0 m/s²) Surface Temperature
393 K (120 °C / 248 °F) Rotation Period
2.0 hours/day (faster than Earth) This planet: 2 h/day Earth: 24 h/day Orbital Environment Star Type
M-type (Red Dwarf) Distance from Star
0.10 AU (15 million km) Atmosphere Carbon monoxide and methane haze over a graphite surface
Surface Characteristics Graphite plains and carbide ridges over a diamond mantle - a glittering coal-black world Moons
Moon 1 stable 0.0016% - 14.0 radii
Small and distant: a quiet, stable companion.
Moon 2 stable 0.016% - 10.1 radii
Small and distant: a quiet, stable companion.
Moon 3 stable 0.0035% - 6.5 radii
Small and distant: a quiet, stable companion.
+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry