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Entering orbit…
Habitability
30/ 100
Extremely Harsh

mers

by bluestardjemy
0

Ice World

✦ de jas
None Activity
Why is this a Ice World?Your planet orbits at 1.50 AU from its star, resulting in frigid temperatures of 183K.
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: 1.50 AU (>3 AU) or Temperature <200K✓ Temperature: 183K✓ Water content: 29.0% for ice formation
Habitability ScoreExtremely Harsh
30
Contributing Factors
water40
Water present but mostly frozen (low gravity lets water escape to space)
geology30
Geologically dead - no nutrient recycling
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere70
Nitrogen atmosphere provides protection but not breathable
temperature20
Very cold - water frozen, challenging for life
magnetic Field30
No magnetic field - vulnerable to solar radiation

Physical Properties

Mass
0.40x Earth (2.39e+24 kg)
Radius
0.74x Earth (4,694 km)
This planet: 0.74× Earth radiusEarth: 1× (baseline)
Surface Gravity
0.74x Earth (7.2 m/s²)
Surface Temperature
183 K (-90 °C / -130 °F)
Rotation Period
25.0 hours/day (slower than Earth)
This planet: 25 h/dayEarth: 24 h/day

Orbital Environment

Star Type
K-type (Orange)
Distance from Star
1.50 AU (224 million km)
Orbital Period
2.20 years

Atmosphere

Thin nitrogen and methane atmosphere

Elemental Composition

Si - Silicon
28.4%
O - Oxygen
23.9%
Fe - Iron
17.0%

Surface Characteristics

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

Closest Real Exoplanet

TRAPPIST-1 h84% similar
Orbiting TRAPPIST-1
YoursTRAPPIST-1 h
Mass0.40 × Earth0.33 × Earth
Radius0.90 × Earth0.76 × Earth
Density (composition)3.00 g/cm³4.17 g/cm³
Temperature183.0 K172.0 K
Starlight received0.18 × Earth0.14 × Earth
Star temperature4,450 K2,566 K
Discovered 2017 via transit · 40 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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