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Entering orbit…
Habitability
15/ 100
Uninhabitable

Plock

by Metamorphohedron1111
0

Ice World

✦ Kerbol
None Activity
Why is this a Ice World?Your planet orbits at 43.50 AU from its star, resulting in frigid temperatures of 43K.
Ice worlds form beyond the frost line where temperatures are low enough for water and other volatiles to freeze solid. They may have subsurface oceans beneath thick ice shells.
Classification Criteria:
✓ Distance: 43.50 AU (>3 AU) or Temperature <200K✓ Temperature: 43K✓ Water content: 42.1% for ice formation
Habitability ScoreUninhabitable
15
Contributing Factors
water24
Water present but mostly frozen (low gravity lets water escape to space)
geology40
Geologically dead - no nutrient recycling (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
atmosphere28
Nitrogen atmosphere provides protection but not breathable (partially stripped by slow rotation)
temperature5
Near absolute zero - all molecular activity ceases, impossible for life (large moon stabilizes the axial tilt - steady seasons)
magnetic Field35
No magnetic field - vulnerable to solar radiation (a large close moon may help stir the core dynamo (speculative))

Physical Properties

Mass
0.10x Earth (5.97e+23 kg)
Radius
0.46x Earth (2,957 km)
This planet: 0.46× Earth radiusEarth: 1× (baseline)
Surface Gravity
0.46x Earth (4.6 m/s²)
Surface Temperature
43 K (-230 °C / -382 °F)
Rotation Period
18.0 hours/day (faster than Earth)
This planet: 18 h/dayEarth: 24 h/day

Orbital Environment

Star Type
G-type (Yellow (Sun-like))
Distance from Star
43.50 AU (6.51 billion km)
Orbital Period
286.9 years

Atmosphere

Thin nitrogen and methane atmosphere

Elemental Composition

O - Oxygen
33.7%
H - Hydrogen
16.9%
Si - Silicon
16.9%

Surface Characteristics

Frozen surface covered in water ice, possible subsurface ocean if tidal heating present

Closest Real Exoplanet

Kepler-1489 c74% similar
Orbiting Kepler-1489
YoursKepler-1489 c
Mass0.10 × Earth0.09 × Earth
Radius0.57 × Earth0.51 × Earth
Density (composition)3.00 g/cm³3.61 g/cm³
Temperature43.2 K—
Starlight received0.00 × Earth—
Star temperature5,600 K5,566 K
Discovered 2024 via transit · 4,175 light-years awaySource: NASA Exoplanet Archive
Moons
Moon 1receding10% - 17.5 radii

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

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

+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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