Gas Giant Magnetic Field Extreme Activity
Why is this a Gas Giant? Your planet has 74.4% hydrogen and helium, combined with a mass of 87.0x 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: 74.4% (>60% required) ✓ Mass: 87.0x Earth (>10x required)
Habitability Score Extremely Harsh
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 30
Very slow rotation - severe temperature swings between eternal day and night sides Organic Chemistry 54
Carbon and hydrogen present - organic chemistry possible (tidal pools cycle wet and dry - a boost for prebiotic chemistry) atmosphere 18
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation) temperature 20
Very cold - water frozen, challenging 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
87.00x Earth (5.20e+26 kg) Radius
4.43x Earth (28,230 km) This planet: 4.43× Earth radius Earth: 1× (baseline)
Surface Gravity
4.43x Earth (43.5 m/s²) Surface Temperature
179 K (-95 °C / -138 °F) Rotation Period
48.0 hours/day (slower than Earth) This planet: 48 h/day Earth: 24 h/day Orbital Environment Star Type
BH-type (Black Hole) Distance from Star
48.50 AU (7.26 billion km) Orbital Period
106.8 years 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 Kepler-16 Yours Kepler-16 b Mass 87.0 × Earth 106.0 × Earth Radius 7.17 × Earth 8.45 × Earth Density (composition) 1.30 g/cm³ 0.97 g/cm³ Temperature 178.5 K 206.0 K Starlight received 0.17 × Earth 0.25 × Earth Star temperature — 4,450 K
Matched on physical properties only — no confirmed exoplanet orbits a black hole. Discovered 2011 via transit · 245 light-years away Source: NASA Exoplanet Archive Browse all 5,568 real exoplanets Learn more about exoplanets Moons
Moon 1 stable 0.022% - 10.8 radii
Small and distant: a quiet, stable companion.
Moon 2 stable 0.0025% - 40.5 radii
Small and distant: a quiet, stable companion.
Moon 3 stable 0.028% - 18.6 radii
Small and distant: a quiet, stable companion.
Moon 4 stable 0.010% - 100.0 radii
Small and distant: a quiet, stable companion.
Moon 5 rings 0.010% - 1.8 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 6 rings 0.010% - 2.7 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 7 rings 0.010% - 4.1 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry