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Entering orbit…
Habitability
30/ 100
Extremely Harsh

Ouranos

0

Gas Giant

Magnetic FieldExtreme Activity
Why is this a Gas Giant?Your planet has 86.0% hydrogen and helium, combined with a mass of 10.1x 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: 86.0% (>60% required)✓ Mass: 10.1x Earth (>10x required)
Habitability ScoreExtremely Harsh
30
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
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry84
Core organic elements (CHNO) present (tidal pools cycle wet and dry - a boost for prebiotic chemistry)
atmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)
temperature15
Frozen world - minimal potential for complex life (large moon stabilizes the axial tilt - steady seasons)
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
10.10x Earth (6.03e+25 kg)
Radius
2.16x Earth (13,772 km)
This planet: 2.16× Earth radiusEarth: 1× (baseline)
Surface Gravity
2.16x Earth (21.2 m/s²)
Surface Temperature
70 K (-203 °C / -333 °F)
Rotation Period
10.0 hours/day (faster than Earth)
This planet: 10 h/dayEarth: 24 h/day

Orbital Environment

Star Type
SNR-type (Supernova Remnant)
Distance from Star
106.10 AU (15.9 billion km)
Orbital Period
923.7 years

Atmosphere

Hydrogen and helium dominated with trace methane and ammonia

Elemental Composition

H - Hydrogen
53.8%
He - Helium
32.3%
C - Carbon
5.4%

Surface Characteristics

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

Closest Real Exoplanet

K2-395 c74% similar
Orbiting K2-395
YoursK2-395 c
Mass10.1 × Earth11.4 × Earth
Radius3.50 × Earth3.40 × Earth
Density (composition)1.30 g/cm³1.60 g/cm³
Temperature70.2 K
Starlight received0.00 × Earth
Star temperature 5,007 K
Discovered 2022 via transit · 936 light-years awaySource: NASA Exoplanet Archive
Moons
Moon 1merged1.0% - 100.0 radii

Merged with an adjacent moon: too close for both to hold a stable orbit.

Moon 2stable0.010% - 11.0 radii

Small and distant: a quiet, stable companion.

Tidal braking locked the planet to its moon: one face forever moonward.

Moon 3receding0.022% - 51.1 radii

Outside the synchronous orbit: slowly receding, like Luna (~cm per year).

Moon 4merged0.32% - 22.0 radii

Merged with an adjacent moon: too close for both to hold a stable orbit.

Moon 5receding0.10% - 81.1 radii

Outside the synchronous orbit: slowly receding, like Luna (~cm per year).

Moon 6merged0.20% - 54.4 radii

Merged with an adjacent moon: too close for both to hold a stable orbit.

Moon 7recedingOcean world0.22% - 20.3 radii

Outside the synchronous orbit: slowly receding, like Luna (~cm per year).

A thin tidal-warmed subsurface ocean may exist, but conditions are marginal (25/100).

+5 temperature: large moon stabilizes the axial tilt - steady seasons+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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