Carbon World Magnetic Field High Activity
Why is this a Carbon World? Your planet's carbon (41.7%) outweighs its oxygen (10.4%), 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: 41.7% (>=20% required) ✓ Carbon exceeds Oxygen: 41.7% > 10.4% ✓ Mass: 0.9x Earth (<=8x hycean ceiling)
Habitability Score Uninhabitable
Contributing Factors water 5
Very dry - minimal water - boiling away, little would be retained geology 90
Active geology recycles nutrients and drives carbon cycle rotation 60
Fast rotation - strong global wind patterns and weather systems, but manageable Organic Chemistry 100
All CHNOPS elements present - building blocks of life 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
0.90x Earth (5.37e+24 kg) Radius
0.97x Earth (6,151 km) This planet: 0.97× Earth radius Earth: 1× (baseline)
Surface Gravity
0.97x Earth (9.5 m/s²) Surface Temperature
578 K (305 °C / 581 °F) Rotation Period
8.0 hours/day (faster than Earth) This planet: 8 h/day Earth: 24 h/day Orbital Environment Star Type
A-type (Blue-White) Distance from Star
2.12 AU (317 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 0.010% - 23.0 radii
Small and distant: a quiet, stable companion.