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Entering orbit…
Habitability
8/ 100
Uninhabitable

Argonius

0

Rocky Terrestrial

High Activity
Why is this a Rocky Terrestrial?Your planet is dominated by silicate (23.3%) and iron (7.8%) 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: 23.3% + Iron: 7.8% + Magnesium: 7.8%✓ Mass: 3.3x Earth (terrestrial range)
Habitability ScoreUninhabitable
8
Contributing Factors
water0
No water - the recipe has no hydrogen and oxygen to form it
geology90
Active geology recycles nutrients and drives carbon cycle
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry20
Limited organic chemistry potential
atmosphere4
No atmosphere - exposed to radiation and temperature extremes (partially stripped by slow rotation)
temperature40
Extreme temperature - very difficult for life
magnetic Field30
No magnetic field - vulnerable to solar radiation — but the remnant's shock fronts flood this orbit with cosmic rays

Physical Properties

Mass
3.30x Earth (1.97e+25 kg)
Radius
1.49x Earth (9,485 km)
This planet: 1.49× Earth radiusEarth: 1× (baseline)
Surface Gravity
1.49x Earth (14.6 m/s²)
Surface Temperature
227 K (-46 °C / -51 °F)
Rotation Period
1,408.0 hours/day (slower than Earth)
This planet: 1408 h/dayEarth: 24 h/day

Orbital Environment

Star Type
SNR-type (Supernova Remnant)
Distance from Star
1.06 AU (159 million km)
Orbital Period
337 days

Atmosphere

Minimal or none

Elemental Composition

Ar - Argon
26.4%
Si - Silicon
23.3%
Fe - Iron
7.8%

Surface Characteristics

Rocky surface with impact craters, possible volcanic features

Closest Real Exoplanet

Kepler-1229 b89% similar
Orbiting Kepler-1229
YoursKepler-1229 b
Mass3.30 × Earth2.54 × Earth
Radius1.40 × Earth1.40 × Earth
Density (composition)6.65 g/cm³5.10 g/cm³
Temperature227.1 K212.0 K
Starlight received0.44 × Earth0.52 × Earth
Star temperature— 3,784 K
Discovered 2016 via transit · 864 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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