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Habitability
0/ 100
Uninhabitable

Bron

0

Brown Dwarf

Magnetic FieldNone Activity
Why is this a Brown 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: 9534.0x EarthTemperature: 2200K
Habitability ScoreUninhabitable
0
Contributing Factors
water15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans
geology30
Geologically dead - no nutrient recycling
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
temperature0
Inferno world - temperatures exceed all possibility of life
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
9534.00x Earth (5.69e+28 kg)
Radius
21.20x Earth (135,093 km)
This planet: 21.20× Earth radiusEarth: 1× (baseline)
Surface Gravity
21.20x Earth (208.0 m/s²)
Surface Temperature
2,200 K (1,927 °C / 3,500 °F)
Rotation Period
1.0 hours/day (faster than Earth)
This planet: 1 h/dayEarth: 24 h/day

Orbital Environment

Star Type
BH-type (Black Hole)
Distance from Star
106.10 AU (15.9 billion km)
Orbital Period
345.6 years

Atmosphere

Hydrogen and helium with iron and silicate cloud decks - hot enough to rain molten metal

Elemental Composition

H - Hydrogen
52.8%
He - Helium
33.3%
K - Potassium
2.8%

Surface Characteristics

No surface: a deuterium-burning sphere the size of Jupiter and dozens of times its mass, glowing dull red from its own heat

Closest Real Exoplanet

CD-35 2722 b81% similar
Orbiting CD-35 2722
YoursCD-35 2722 b
Mass9,534 × Earth9,380 × Earth
Radius21.2 × Earth17.4 × Earth
Density (composition)— 9.81 g/cm³
Temperature2,200 K1,800 K
Starlight received0.04 × Earth—
Star temperature— 3,689 K
Matched on physical properties only — no confirmed exoplanet orbits a black hole.Discovered 2011 via imaging · 73 light-years awaySource: NASA Exoplanet Archive
Moons
Moon 1stable0.0025% - 6.5 radii

Small and distant: a quiet, stable companion.

Moon 2stable0.035% - 36.5 radii

Small and distant: a quiet, stable companion.

Moon 3stable0.018% - 100.0 radii

Small and distant: a quiet, stable companion.

+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry
Surface views from three worlds: rocky ground under a ringed sky, a cloud deck, and a lit desert

New: Stand on Your World 🏔️

Every planet you build can now be seen from the ground. The terrain, the color of the sky, the weather and what hangs overhead are all read from the same numbers that shape the globe — so a thin-aired world gives you sunlit rock under a near-black sky crowded with stars, a runaway greenhouse seals you under an unbroken sulfur lid, and a gas giant leaves you in the cloud tops with nothing solid beneath you at all. If one of your moons wandered inside the Roche limit, what is left of it arcs overhead as rings.

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