Why is this a Gas Dwarf?Your planet has an unusual composition that doesn't fit standard classifications, or lacks the elements needed for complex geological processes.
Barren worlds can form from uncommon element combinations or may be remnants of larger bodies that lost their atmospheres and volatile materials.
Classification Criteria:
Composition doesn't match standard planet typesMass: 3.1x EarthTemperature: 235K
Habitability ScoreExtremely Harsh
22
Contributing Factors
water15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans
geology60
Some geological activity provides slow nutrient cycling
rotation65
Slow rotation - significant day/night temperature variations, but life can adapt
Organic Chemistry84
Core organic elements (CHNO) present (tidal pools cycle wet and dry - a boost for prebiotic chemistry)
atmosphere30
Hydrogen-rich atmosphere typical of gas giants
temperature40
Extreme temperature - very difficult for life (strong seasons from a 126° tilt: −5% habitability)
magnetic Field100
Magnetic field provides radiation protection — but the black hole's accretion disk bathes this orbit in hard X-ray radiation
Physical Properties
Mass
3.10x Earth (1.85e+25 kg)
Radius
1.46x Earth (9,290 km)
Surface Gravity
1.46x Earth (14.3 m/s²)
Surface Temperature
235 K (-38 °C / -37 °F)
Rotation Period
62.0 hours/day (slower than Earth)
Orbital Environment
Star Type
BH-type (Black Hole)
Distance from Star
41.70 AU (6.24 billion km)
Orbital Period
85.2 years
Atmosphere
Deep hydrogen-helium envelope with photochemical haze
Elemental Composition
H - Hydrogen
45.0%
He - Helium
20.0%
O - Oxygen
15.0%
Surface Characteristics
No solid surface - a thick gas envelope wrapped around a small deep core (a mini-Neptune)
Matched on physical properties only — no confirmed exoplanet orbits a black hole.Discovered 2022 via radial velocity · 25 light-years awaySource: NASA Exoplanet Archive