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Entering orbit…
Habitability
0/ 100
Uninhabitable

Rigel a b

0

Lava World

Magnetic FieldExtreme Activity
Why is this a Lava World?Your planet's proximity to its star (0.10 AU) results in extreme surface temperatures of 15633K.
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: 15633K (>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
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry50
Carbon and hydrogen present - organic chemistry possible
atmosphere10
No atmosphere - exposed to radiation and temperature extremes
temperature0
Inferno world - temperatures exceed all possibility of life
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
1.80x Earth (1.07e+25 kg)
Radius
1.22x Earth (7,750 km)
This planet: 1.22× Earth radiusEarth: 1× (baseline)
Surface Gravity
1.22x Earth (11.9 m/s²)
Surface Temperature
15,633 K (15,360 °C / 27,680 °F)
Rotation Period
20.0 hours/day (faster than Earth)
This planet: 20 h/dayEarth: 24 h/day

Orbital Environment

Star Type
O-type (Blue Supergiant)
Distance from Star
0.10 AU (15 million km)
Orbital Period
2 days
Time Dilation
Clocks run 2.3 minutes per year slower than deep space — about 3.1 hours over a lifetime

Atmosphere

Minimal - too hot to retain

Elemental Composition

C - Carbon
52.3%
Fe - Iron
17.4%
Si - Silicon
17.4%

Surface Characteristics

Molten surface with lava flows, volcanic activity everywhere

Closest Real Exoplanet

KMT-2020-BLG-0414L b71% similar
Orbiting KMT-2020-BLG-0414L
YoursKMT-2020-BLG-0414L b
Mass1.80 × Earth1.87 × Earth
Radius1.17 × Earth1.20 × Earth
Density (composition)6.15 g/cm³5.96 g/cm³
Temperature15,633 K—
Starlight received10,000,000 × Earth—
Star temperature35,000 K—
Discovered 2021 via microlensing · 3,979 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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