No life — no phosphorus — DNA and ATP are built on itLow Activity
Why is this a Rocky Terrestrial?Your planet is dominated by silicate (36.6%) and iron (11.0%) content, forming a rocky terrestrial body.Rocky terrestrial planets are primarily composed of silicate rocks and metals. They're the most common type of small planet in the universe.
✓ Silicon: 36.6% + Iron: 11.0% + Magnesium: 9.8%✓ Mass: 0.4x Earth (terrestrial range)
Habitability ScoreHabitable
Contributing Factorswater34
Limited water content (low gravity lets water escape to space)geology60
Some geological activity provides slow nutrient cyclingrotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distributionOrganic Chemistry80
Core organic elements (CHNO) presentatmosphere70
Nitrogen atmosphere provides protection but not breathabletemperature70
Challenging but potentially habitable temperaturemagnetic Field30
No magnetic field - vulnerable to solar radiation Physical Properties
Mass
0.40x Earth (2.39e+24 kg)Radius
0.74x Earth (4,694 km)Surface Gravity
0.74x Earth (7.2 m/s²)Surface Temperature
321 K (48 °C / 118 °F)Rotation Period
28.0 hours/day (slower than Earth)Orbital Environment
Star Type
M-type (Red Dwarf)Distance from Star
0.15 AU (22.4 million km)Atmosphere
Thin CO₂ and nitrogen atmosphere
Surface Characteristics
Rocky surface with impact craters, possible volcanic featuresClosest Real Exoplanet
Orbiting Kepler-138 | Yours | Kepler-138 e |
|---|
| Mass | 0.40 × Earth | 0.43 × Earth |
| Radius | 0.79 × Earth | 0.80 × Earth |
| Density (composition) | 4.45 g/cm³ | 4.68 g/cm³ |
| Temperature | 321.0 K | 292.0 K |
| Starlight received | 1.78 × Earth | 1.73 × Earth |
| Star temperature | 3,050 K | 3,841 K |
Discovered 2022 via transit timing variations · 218 light-years awaySource: NASA Exoplanet Archive Browse all 5,568 real exoplanetsLearn more about exoplanets