Rocky Terrestrial Magnetic Field Moderate Activity
Why is this a Rocky Terrestrial? Your planet is dominated by silicate (25.0%) and iron (12.5%) 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: 25.0% + Iron: 12.5% + Magnesium: 3.8% ✓ Mass: 1.0x Earth (terrestrial range)
Habitability Score Uninhabitable
Contributing Factors water 50
Limited water content geology 90
Active geology recycles nutrients and drives carbon cycle rotation 10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only Organic Chemistry 84
Core organic elements (CHNO) present (tidal pools cycle wet and dry - a boost for prebiotic chemistry) atmosphere 28
Nitrogen atmosphere provides protection but not breathable (partially stripped by slow rotation) temperature 40
Extreme temperature - very difficult for life 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
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
355 K (82 °C / 180 °F) Rotation Period
24.0 hours/day This planet: 24 h/day Earth: 24 h/day Orbital Environment Star Type
BH-type (Black Hole) Distance from Star
12.60 AU (1.88 billion km) Atmosphere Thin CO₂ and nitrogen atmosphere
Surface Characteristics Rocky surface with impact craters, possible volcanic features Closest Real Exoplanet Orbiting YZ Cet Yours YZ Cet d Mass 1.00 × Earth 1.09 × Earth Radius 1.01 × Earth 1.03 × Earth Density (composition) 5.30 g/cm³ 5.50 g/cm³ Temperature 355.4 K 357.0 K Starlight received 2.52 × Earth 2.70 × Earth Star temperature — 3,151 K
Matched on physical properties only — no confirmed exoplanet orbits a black hole. Discovered 2017 via radial velocity · 12 light-years away Source: NASA Exoplanet Archive Browse all 5,568 real exoplanets Learn more about exoplanets Moons
Moon 1 receding 0.063% - 11.3 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