Magnetic Field Moderate Activity
Why is this a Carbon World? Your planet's carbon (24.1%) 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: 24.1% (>=20% required) ✓ Carbon exceeds Oxygen: 24.1% > 0.0% ✓ Mass: 1.6x Earth (<=8x hycean ceiling)
Habitability Score Uninhabitable
Contributing Factors water 0
No water - the recipe has no hydrogen and oxygen to form it 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 50
Carbon and hydrogen present - organic chemistry possible 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
1.60x Earth (9.56e+24 kg) Radius
1.17x Earth (7,452 km) This planet: 1.17× Earth radius Earth: 1× (baseline)
Surface Gravity
1.17x Earth (11.5 m/s²) Surface Temperature
238 K (-35 °C / -32 °F) Rotation Period
10.0 hours/day (faster than Earth) This planet: 10 h/day Earth: 24 h/day Orbital Environment Star Type
SNR-type (Supernova Remnant) Distance from Star
2.75 AU (411 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 1.60 × Earth 0.82 × Earth Radius 1.27 × Earth 0.95 × Earth Density (composition) 4.26 g/cm³ 5.20 g/cm³ Temperature 237.8 K 159.0 K Starlight received 0.07 × Earth 0.12 × Earth Star temperature — 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