Magnetic Field Moderate Activity
Why is this a Rocky Terrestrial? Your planet is dominated by silicate (21.0%) and iron (13.0%) 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: 21.0% + Iron: 13.0% + Magnesium: 10.0% ✓ Mass: 1.1x Earth (terrestrial range)
Habitability Score Extremely Harsh
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 80
Core organic elements (CHNO) present atmosphere 70
Nitrogen atmosphere provides protection but not breathable 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
1.10x Earth (6.57e+24 kg) Radius
1.03x Earth (6,577 km) This planet: 1.03× Earth radius Earth: 1× (baseline)
Surface Gravity
1.03x Earth (10.1 m/s²) Surface Temperature
352 K (79 °C / 174 °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 1.10 × Earth 1.09 × Earth Radius 1.04 × Earth 1.03 × Earth Density (composition) 5.40 g/cm³ 5.50 g/cm³ Temperature 351.8 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