Why is this a Desert World?Your planet is a hot (416K), bone-dry silicate rock that kept its atmosphere - with no water cycle to wash the air, wind lofts a permanent dust veil over endless dune seas.
Desert worlds are the Tatooine/Arrakis archetype: enough rock to build a solid surface, enough air to carry dust, and too little hydrogen for oceans or rain. Heat bakes out any trace moisture, so nothing interrupts the wind's work - dune seas, wind-carved rock, scorching days.
Classification Criteria:
✓ Hydrogen: 3.2% (<5% - bone dry, no water cycle)✓ Temperature: 416K (300-500K hot band)✓ Silicon + Iron + Magnesium: 43.5% (>=30% - a real rocky surface)✓ Holds an atmosphere to carry the dust haze
Habitability ScoreUninhabitable
7
Contributing Factors
water20
Very dry - minimal water
geology60
Some geological activity provides slow nutrient cycling
rotation65
Slow rotation - significant day/night temperature variations, but life can adapt
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere70
Nitrogen atmosphere provides protection but not breathable
temperature15
Extremely hot - hostile to known life forms
magnetic Field30
No magnetic field - vulnerable to solar radiation — but the black hole's accretion disk bathes this orbit in hard X-ray radiation
Physical Properties
Mass
0.40x Earth (2.39e+24 kg)
Radius
0.74x Earth (4,694 km)
Surface Gravity
0.74x Earth (7.2 m/s²)
Surface Temperature
416 K (143 °C / 289 °F)
Rotation Period
46.0 hours/day (slower than Earth)
Orbital Environment
Star Type
BH-type (Black Hole)
Distance from Star
8.93 AU (1.34 billion km)
Orbital Period
8.44 years
Atmosphere
Thin, dusty CO₂-nitrogen atmosphere - permanent haze of wind-borne sand
Elemental Composition
S - Sulfur
24.2%
Fe - Iron
24.2%
N - Nitrogen
16.1%
Surface Characteristics
Endless dune seas and wind-carved rock under a permanent dust haze - scorching days, freezing nights
Matched on physical properties only — no confirmed exoplanet orbits a black hole.Discovered 2025 via radial velocity · 6 light-years awaySource: NASA Exoplanet Archive