Magnetic Field Extreme Activity
Why is this a Gas Giant? Your planet has 13.0% hydrogen and helium, combined with a mass of 2485.0x 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: 13.0% (>60% required) ✓ Mass: 2485.0x 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 54
Carbon and hydrogen present - organic chemistry possible (tidal pools cycle wet and dry - a boost for prebiotic chemistry) atmosphere 12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation) temperature 0
Near absolute zero - all molecular activity ceases, impossible for life magnetic Field 100
Magnetic field provides radiation protection Physical Properties Mass
2485.00x Earth (1.48e+28 kg) Radius
13.54x Earth (86,294 km) This planet: 13.54× Earth radius Earth: 1× (baseline)
Surface Gravity
13.54x Earth (132.9 m/s²) Surface Temperature
34 K (-239 °C / -399 °F) Rotation Period
5.0 hours/day (faster than Earth) This planet: 5 h/day Earth: 24 h/day Orbital Environment Star Type
BH-type (Black Hole) Distance from Star
1665.20 AU (249 billion km) Orbital Period
21,488 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 WISPIT 2 Yours WISPIT 2 b Mass 2,485 × Earth 1,540 × Earth Radius 21.9 × Earth 17.9 × Earth Density (composition) 1.30 g/cm³ 1.48 g/cm³ Temperature 33.9 K 33.0 K Starlight received 0.00 × Earth 0.00 × Earth Star temperature — 4,400 K
Matched on physical properties only — no confirmed exoplanet orbits a black hole. Discovered 2025 via imaging · 440 light-years away Source: NASA Exoplanet Archive Browse all 5,568 real exoplanets Learn more about exoplanets Moons
Moon 1 rings 0.071% - 2.1 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
Moon 2 stable 0.00089% - 3.3 radii
Small and distant: a quiet, stable companion.
Tidal braking locked the planet to its moon: one face forever moonward.
Moon 3 stable Ocean world 0.022% - 6.8 radii
Small and distant: a quiet, stable companion.
A thin tidal-warmed subsurface ocean may exist, but conditions are marginal (24/100).
Moon 4 stable 0.010% - 21.1 radii
Small and distant: a quiet, stable companion.
Moon 5 stable 0.028% - 26.1 radii
Small and distant: a quiet, stable companion.
Moon 6 receding 0.40% - 100.0 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry