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Entering orbit…
Habitability
40/ 100
Marginal

Suvvis

0

Ice Giant

Magnetic FieldModerate Activity
Why is this a Ice Giant?Your planet has moderate mass (17.0x Earth) with significant water, carbon, and nitrogen content, characteristic of ice giants.
Ice giants like Uranus and Neptune have icy interiors with thick atmospheres of hydrogen and helium, but not enough to be classified as gas giants.
Classification Criteria:
✓ Mass: 17.0x Earth (5-20x range)✓ Water/Carbon/Nitrogen rich composition
Habitability ScoreMarginal
40
Contributing Factors
water15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans
geology100
Active geology recycles nutrients and drives carbon cycle (tidal flexing sustains geologic activity)
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)
temperature25
Very cold - water frozen, challenging for life (large moon stabilizes the axial tilt - steady seasons)
magnetic Field100
Magnetic field provides radiation protection (a large close moon may help stir the core dynamo (speculative))

Physical Properties

Mass
17.00x Earth (1.02e+26 kg)
Radius
2.57x Earth (16,382 km)
This planet: 2.57× Earth radiusEarth: 1× (baseline)
Surface Gravity
2.57x Earth (25.2 m/s²)
Surface Temperature
105 K (-168 °C / -270 °F)
Rotation Period
16.0 hours/day (faster than Earth)
This planet: 16 h/dayEarth: 24 h/day

Orbital Environment

Star Type
SNR-type (Supernova Remnant)
Distance from Star
150.00 AU (22.4 billion km)
Orbital Period
1,553 years

Atmosphere

Hydrogen and helium with water, methane, and ammonia ices

Elemental Composition

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

Surface Characteristics

Icy mantle surrounding rocky core, with hydrogen-helium atmosphere

Closest Real Exoplanet

TOI-500 e74% similar
Orbiting TOI-500
YoursTOI-500 e
Mass17.0 × Earth15.1 × Earth
Radius3.88 × Earth3.99 × Earth
Density (composition)1.60 g/cm³1.31 g/cm³
Temperature105.4 K—
Starlight received0.00 × Earth—
Star temperature— 4,440 K
Discovered 2022 via radial velocity · 155 light-years awaySource: NASA Exoplanet Archive
MoonsLife may exist on a moon
Moon 1rings1.4% - 1.6 radii

Inside the Roche limit (1.79 planet radii): torn apart into a ring system.

Moon 2recedingOcean world - life10% - 19.2 radii

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

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

Tidal heat sustains a subsurface ocean over a rock seafloor: a strong candidate for life (Europa-like, 97/100).

Moon 3merged0.010% - 29.3 radii

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

+5 temperature: large moon stabilizes the axial tilt - steady seasons+10 geology: tidal flexing sustains geologic activity+5 magneticField: a large close moon may help stir the core dynamo (speculative)
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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