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Entering orbit…
Habitability
12/ 100
Uninhabitable

Mars

0

Rocky Terrestrial

Low Activity
Why is this a Rocky Terrestrial?Your planet is dominated by silicate (34.2%) and iron (20.5%) content, forming a rocky terrestrial body.
Rocky terrestrial planets are primarily composed of silicate rocks and metals. They're the most common type of small planet in the universe.
Classification Criteria:
✓ Silicon: 34.2% + Iron: 20.5% + Magnesium: 13.7%✓ Mass: 0.4x Earth (terrestrial range)
Habitability ScoreUninhabitable
12
Contributing Factors
water0
No water - the recipe has no hydrogen and oxygen to form it
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 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
227 K (-46 °C / -50 °F)
Rotation Period
25.0 hours/day (slower than Earth)
This planet: 25 h/dayEarth: 24 h/day

Orbital Environment

Star Type
G-type (Yellow (Sun-like))
Distance from Star
1.50 AU (224 million km)
Orbital Period
1.84 years

Atmosphere

Thin CO₂ and nitrogen atmosphere

Elemental Composition

Si - Silicon
34.2%
O - Oxygen
20.5%
Fe - Iron
20.5%

Surface Characteristics

Rocky surface with impact craters, possible volcanic features

Closest Real Exoplanet

TRAPPIST-1 e78% similar
Orbiting TRAPPIST-1
YoursTRAPPIST-1 e
Mass0.40 × Earth0.69 × Earth
Radius0.79 × Earth0.92 × Earth
Density (composition)4.45 g/cm³4.90 g/cm³
Temperature227.3 K250.0 K
Starlight received0.44 × Earth0.65 × Earth
Star temperature5,600 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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