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Entering orbit…
Habitability
35/ 100
Extremely Harsh

Gourand III

by Stargazer
0

Ice World

✦ Stargazer Nebula
Magnetic FieldLow Activity
Why is this a Ice World?Your planet orbits at 1.00 AU from its star, resulting in frigid temperatures of 234K.
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: 1.00 AU (>3 AU) or Temperature <200K✓ Temperature: 234K✓ Water content: 37.5% for ice formation
Habitability ScoreExtremely Harsh
35
Contributing Factors
water60
Water present but mostly frozen — shielded under ice and rock, a subsurface refuge could outlast the blast
geology60
Some geological activity provides slow nutrient cycling
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry20
Limited organic chemistry potential
atmosphere70
Nitrogen atmosphere provides protection but not breathable
temperature40
Extreme temperature - very difficult for life
magnetic Field100
Magnetic field provides radiation protection — but the remnant's shock fronts flood this orbit with cosmic rays

Physical Properties

Mass
1.00x Earth (5.97e+24 kg)
Radius
1.00x Earth (6,371 km)
This planet: 1.00× Earth radiusEarth: 1× (baseline)
Surface Gravity
1.00x Earth (9.8 m/s²)
Surface Temperature
234 K (-39 °C / -39 °F)
Rotation Period
24.0 hours/day
This planet: 24 h/dayEarth: 24 h/day

Orbital Environment

Star Type
SNR-type (Supernova Remnant)
Distance from Star
1.00 AU (150 million km)
Orbital Period
309 days

Atmosphere

Thin nitrogen and methane atmosphere

Elemental Composition

Fe - Iron
37.5%
O - Oxygen
28.1%
H - Hydrogen
18.8%

Surface Characteristics

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

Closest Real Exoplanet

TRAPPIST-1 f84% similar
Orbiting TRAPPIST-1
YoursTRAPPIST-1 f
Mass1.00 × Earth1.04 × Earth
Radius1.22 × Earth1.04 × Earth
Density (composition)3.00 g/cm³5.09 g/cm³
Temperature233.8 K218.0 K
Starlight received0.50 × Earth0.37 × Earth
Star temperature— 2,566 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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