Magnetic Field Moderate Activity
Why is this a Carbon World? Your planet's carbon (32.9%) outweighs its oxygen (15.9%), 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: 32.9% (>=20% required) ✓ Carbon exceeds Oxygen: 32.9% > 15.9% ✓ Mass: 1.0x Earth (<=8x hycean ceiling)
Habitability Score Habitable
Contributing Factors water 50
Limited water content 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 84
Core organic elements (CHNO) present (tidal pools cycle wet and dry - a boost for prebiotic chemistry) atmosphere 40
Atmosphere present but composition not ideal for life temperature 100
Optimal temperature range for liquid water and life 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
290 K (17 °C / 63 °F) Rotation Period
24.0 hours/day This planet: 24 h/day Earth: 24 h/day Orbital Environment Star Type
G-type (Yellow (Sun-like)) Distance from Star
2.71 AU (405 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 Closest Real Exoplanet Orbiting Teegarden's Star Yours Teegarden's Star d Mass 1.00 × Earth 0.82 × Earth Radius 1.12 × Earth 0.95 × Earth Density (composition) 3.90 g/cm³ 5.20 g/cm³ Temperature 290.1 K 159.0 K Starlight received 0.14 × Earth 0.12 × Earth Star temperature 5,600 K 3,034 K
Discovered 2024 via radial velocity · 12 light-years away Source: NASA Exoplanet Archive Browse all 5,568 real exoplanets Learn more about exoplanets Moons
Moon 1 stable 0.010% - 13.3 radii
Small and distant: a quiet, stable companion.
+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry