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Entering orbit…
Habitability
0/ 100
Uninhabitable

Magmainia

0

Lava World

Extreme Activity
Why is this a Lava World?Your planet's proximity to its star (1.00 AU) results in extreme surface temperatures of 4944K.
Lava worlds orbit so close to their stars that rocky surfaces melt into oceans of molten rock. Recent planet formation can also create temporary lava worlds.
Classification Criteria:
✓ Temperature: 4944K (>1000K)
Habitability ScoreUninhabitable
0
Contributing Factors
water0
No water - the recipe has no hydrogen and oxygen to form it
geology40
Extreme volcanic activity may be hazardous
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)
temperature0
Inferno world - temperatures exceed all possibility of life
magnetic Field30
No magnetic field - vulnerable to solar radiation

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
4,944 K (4,670 °C / 8,439 °F)
Rotation Period
2,000.0 hours/day (slower than Earth)
This planet: 2000 h/dayEarth: 24 h/day

Orbital Environment

Star Type
O-type (Blue Supergiant)
Distance from Star
1.00 AU (150 million km)
Orbital Period
67 days
Time Dilation
Clocks run 14.0 seconds per year slower than deep space — about 19 minutes over a lifetime

Atmosphere

Minimal - too hot to retain

Elemental Composition

Al - Aluminum
23.0%
Fe - Iron
23.0%
Ni - Nickel
23.0%

Surface Characteristics

Molten surface with lava flows, volcanic activity everywhere

Closest Real Exoplanet

KOI-55 b52% similar
Orbiting KOI-55
YoursKOI-55 b
Mass0.10 × Earth0.44 × Earth
Radius0.54 × Earth0.76 × Earth
Density (composition)3.55 g/cm³5.54 g/cm³
Temperature4,944 K7,778 K
Starlight received100,000 × Earth636,000 × Earth
Star temperature35,000 K27,730 K
Discovered 2011 via orbital brightness modulation · 4,012 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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