Gas Giant Magnetic Field Extreme Activity
Why is this a Gas Giant? Your planet has 17.1% hydrogen and helium, combined with a mass of 9534.0x Earth, which exceeds the gas giant threshold. Gas giants form when massive cores capture enormous atmospheres of light gases. They typically form beyond the 'frost line' where volatiles can condense.
✓ Hydrogen + Helium: 17.1% (>60% required) ✓ Mass: 9534.0x Earth (>10x required)
Habitability Score Uninhabitable
Contributing Factors water 15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans geology 40
Extreme volcanic activity may be hazardous rotation 10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only Organic Chemistry 20
Limited organic chemistry potential atmosphere 12
Hydrogen-rich atmosphere typical of gas giants (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
9534.00x Earth (5.69e+28 kg) Radius
21.20x Earth (135,093 km) This planet: 21.20× Earth radius Earth: 1× (baseline)
Surface Gravity
21.20x Earth (208.0 m/s²) Surface Temperature
338 K (65 °C / 149 °F) Rotation Period
1,408.0 hours/day (slower than Earth) This planet: 1408 h/day Earth: 24 h/day Orbital Environment Star Type
BH-type (Black Hole) Distance from Star
13.50 AU (2.02 billion km) Atmosphere Hydrogen and helium dominated with trace methane and ammonia
Surface Characteristics No solid surface - thick gaseous envelope with possible rocky core deep within Closest Real Exoplanet Orbiting HD 142 Yours HD 142 b Mass 9,534 × Earth 2,260 × Earth Radius 34.3 × Earth 12.7 × Earth Density (composition) 1.30 g/cm³ 6.08 g/cm³ Temperature 338.4 K 358.0 K Starlight received 2.19 × Earth 2.76 × Earth Star temperature — 6,245 K
Matched on physical properties only — no confirmed exoplanet orbits a black hole. Discovered 2001 via radial velocity · 85 light-years away Source: NASA Exoplanet Archive Browse all 5,568 real exoplanets Learn more about exoplanets