Magnetic Field Low Activity
Why is this a Rocky Terrestrial? Your planet is dominated by silicate (29.7%) and iron (9.9%) 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: 29.7% + Iron: 9.9% + Magnesium: 9.9% ✓ Mass: 0.6x Earth (terrestrial range)
Habitability Score Uninhabitable
Contributing Factors water 80
Good water content (low gravity lets water escape to space) geology 60
Some geological activity provides slow nutrient cycling rotation 10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only Organic Chemistry 20
Limited organic chemistry potential atmosphere 28
Nitrogen atmosphere provides protection but not breathable (partially stripped by slow rotation) temperature 70
Challenging but potentially habitable temperature magnetic Field 100
Magnetic field provides radiation protection — but the black hole's accretion disk bathes this orbit in hard X-ray radiation Physical Properties Mass
0.60x Earth (3.58e+24 kg) Radius
0.84x Earth (5,374 km) This planet: 0.84× Earth radius Earth: 1× (baseline)
Surface Gravity
0.84x Earth (8.3 m/s²) Surface Temperature
326 K (53 °C / 128 °F) Rotation Period
18.0 hours/day (faster than Earth) This planet: 18 h/day Earth: 24 h/day Orbital Environment Star Type
BH-type (Black Hole) Distance from Star
14.50 AU (2.17 billion km) Atmosphere Thin nitrogen atmosphere
Surface Characteristics Rocky surface with impact craters, possible volcanic features Closest Real Exoplanet Orbiting Kepler-138 Yours Kepler-138 e Mass 0.60 × Earth 0.43 × Earth Radius 0.88 × Earth 0.80 × Earth Density (composition) 4.81 g/cm³ 4.68 g/cm³ Temperature 326.5 K 292.0 K Starlight received 1.90 × Earth 1.73 × Earth Star temperature — 3,841 K
Matched on physical properties only — no confirmed exoplanet orbits a black hole. Discovered 2022 via transit timing variations · 218 light-years away Source: NASA Exoplanet Archive Browse all 5,568 real exoplanets Learn more about exoplanets Moons
Moon 1 receding 0.22% - 13.6 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Tidal braking locked the planet to its moon: one face forever moonward.
+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry