Carbon World Magnetic Field High Activity
Why is this a Carbon World? Your planet's carbon (26.2%) outweighs its oxygen (0.9%), 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: 26.2% (>=20% required) ✓ Carbon exceeds Oxygen: 26.2% > 0.9% ✓ Mass: 4.4x Earth (<=8x hycean ceiling)
Habitability Score Marginal
Contributing Factors water 20
Very dry - minimal water 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 75
All CHNOPS elements present - building blocks of life - chlorine-laced environment attacks organic molecules atmosphere 40
Atmosphere present but composition not ideal for life temperature 40
Extreme temperature - very difficult for life magnetic Field 100
Magnetic field provides radiation protection Physical Properties Mass
4.40x Earth (2.63e+25 kg) Radius
1.64x Earth (10,440 km) This planet: 1.64× Earth radius Earth: 1× (baseline)
Surface Gravity
1.64x Earth (16.1 m/s²) Surface Temperature
358 K (85 °C / 185 °F) Rotation Period
24.0 hours/day This planet: 24 h/day Earth: 24 h/day Orbital Environment Star Type
A-type (Blue-White) Distance from Star
13.00 AU (1.94 billion 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 0.00014% - 2.9 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).