Carbon World Magnetic Field Moderate Activity
Why is this a Carbon World? Your planet's carbon (23.8%) outweighs its oxygen (14.3%), 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: 23.8% (>=20% required) ✓ Carbon exceeds Oxygen: 23.8% > 14.3% ✓ Mass: 1.0x Earth (<=8x hycean ceiling)
Habitability Score Extremely Harsh
Contributing Factors water 40
Good water content - boiling away, little would be retained geology 90
Active geology recycles nutrients and drives carbon cycle rotation 100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution Organic Chemistry 80
Core organic elements (CHNO) present atmosphere 40
Atmosphere present but composition not ideal for life temperature 15
Extremely hot - hostile to known life forms magnetic Field 100
Magnetic field provides radiation protection Physical Properties Mass
1.00x Earth (5.97e+24 kg) Radius
1.00x Earth (6,371 km) This planet: 1.00× Earth radius Earth: 1× (baseline)
Surface Gravity
1.00x Earth (9.8 m/s²) Surface Temperature
520 K (247 °C / 477 °F) Rotation Period
24.0 hours/day This planet: 24 h/day Earth: 24 h/day Orbital Environment Distance from Star
2.29 AU (343 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 rings 0.32% - 2.6 radii
Inside the Roche limit (2.80 planet radii): torn apart into a ring system.