Why is this a Ice Giant?Your planet has moderate mass (10.0x 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 Chemistry80
Core organic elements (CHNO) present
atmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)
temperature5
Inferno world - temperatures exceed all possibility of life (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
10.00x Earth (5.97e+25 kg)
Radius
2.15x Earth (13,726 km)
Surface Gravity
2.15x Earth (21.1 m/s²)
Surface Temperature
1,467 K (1,193 °C / 2,180 °F)
Rotation Period
16.0 hours/day (faster than Earth)
Orbital Environment
Star Type
BH-type (Black Hole)
Distance from Star
1.63 AU (244 million km)
Orbital Period
240 days
Atmosphere
Hydrogen and helium with water, methane, and ammonia ices
Elemental Composition
H - Hydrogen
40.0%
He - Helium
25.0%
C - Carbon
15.0%
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 2019 via radial velocity · 204 light-years awaySource: NASA Exoplanet Archive