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Habitability
0/ 100
Uninhabitable

WISE-0855

0

Gas Giant

Magnetic FieldExtreme Activity
Why is this a Gas Giant?Your planet has 65.0% hydrogen and helium, combined with a mass of 228.0x Earth, which exceeds the gas giant threshold.
Gas giants form when massive cores capture enormous atmospheres of light gases. They typically form beyond the 'frost line' where volatiles can condense.
Classification Criteria:
✓ Hydrogen + Helium: 65.0% (>60% required)✓ Mass: 228.0x Earth (>10x required)
Habitability ScoreUninhabitable
0
Contributing Factors
water15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans
geology40
Extreme volcanic activity may be hazardous
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere30
Hydrogen-rich atmosphere typical of gas giants
temperature0
Near absolute zero - all molecular activity ceases, impossible for life
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
228.00x Earth (1.36e+27 kg)
Radius
6.11x Earth (38,921 km)
This planet: 6.11× Earth radiusEarth: 1× (baseline)
Surface Gravity
6.11x Earth (59.9 m/s²)
Surface Temperature
9 K (-265 °C / -444 °F)
Rotation Period
16.0 hours/day (faster than Earth)
This planet: 16 h/dayEarth: 24 h/day

Orbital Environment

Star Type
BH-type (Black Hole)
Distance from Star
47209.60 AU (7.06 trillion km)
Orbital Period
3,243,736 years

Atmosphere

Hydrogen and helium dominated with trace methane and ammonia

Elemental Composition

H - Hydrogen
40.0%
He - Helium
25.0%
C - Carbon
15.0%

Surface Characteristics

No solid surface - thick gaseous envelope with possible rocky core deep within

Closest Real Exoplanet

K2-2016-BLG-0005L b61% similar
Orbiting K2-2016-BLG-0005L
YoursK2-2016-BLG-0005L b
Mass228.0 × Earth350.0 × Earth
Radius9.89 × Earth13.7 × Earth
Density (composition)1.30 g/cm³0.75 g/cm³
Temperature8.62 K—
Starlight received0.00 × Earth—
Star temperature— —
Matched on physical properties only — no confirmed exoplanet orbits a black hole.Discovered 2023 via microlensing · 16,960 light-years awaySource: NASA Exoplanet Archive
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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