Why is this a Ice Giant?Your planet has moderate mass (52.0x Earth) with significant water, carbon, and nitrogen content, characteristic of ice giants.
Ice giants like Uranus and Neptune have icy interiors with thick atmospheres of hydrogen and helium, but not enough to be classified as gas giants.
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans
geology40
Extreme volcanic activity may be hazardous
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry20
Limited organic chemistry potential
atmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)
temperature75
Challenging but potentially habitable temperature (large moon stabilizes the axial tilt - steady seasons)
magnetic Field100
Magnetic field provides radiation protection (a large close moon may help stir the core dynamo (speculative)) — but the black hole's accretion disk bathes this orbit in hard X-ray radiation
Physical Properties
Mass
52.00x Earth (3.11e+26 kg)
Radius
3.73x Earth (23,780 km)
Surface Gravity
3.73x Earth (36.6 m/s²)
Surface Temperature
267 K (-7 °C / 20 °F)
Rotation Period
20.0 hours/day (faster than Earth)
Orbital Environment
Star Type
BH-type (Black Hole)
Distance from Star
22.00 AU (3.29 billion km)
Orbital Period
32.6 years
Atmosphere
Hydrogen and helium with water, methane, and ammonia ices
Elemental Composition
O - Oxygen
50.0%
N - Nitrogen
14.3%
Si - Silicon
14.3%
Surface Characteristics
No solid surface - a deep volatile envelope over a supercritical water mantle and hot-ice interior
Matched on physical properties only — no confirmed exoplanet orbits a black hole.Discovered 2023 via transit · 74 light-years awaySource: NASA Exoplanet Archive