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Entering orbit…
Habitability
0/ 100
Uninhabitable

Anddorus

0

Lava World

Magnetic FieldExtreme Activity
Why is this a Lava World?Runaway tidal heating from its moons keeps the surface molten - the planet is kneaded like Io, only far harder.
Resonant, close-in moons pump orbital eccentricity, and the resulting tidal flexing dissipates enormous heat in the interior. Past a threshold the crust cannot cool: volcanism resurfaces the world continuously.
Classification Criteria:
✓ Close-in moons in a resonant configuration✓ Tidal heat flux beyond the runaway threshold- Orbit itself was fine: 4.00 AU, 148K equilibrium
Habitability ScoreUninhabitable
0
Contributing Factors
water60
Water present but mostly frozen
geology40
Extreme volcanic activity may be hazardous
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere16
Atmosphere present but composition not ideal for life (partially stripped by slow rotation)
temperature0
Very cold - water frozen, challenging for life (large moon stabilizes the axial tilt - steady seasons) (runaway tidal heating keeps the surface molten regardless of orbit)
magnetic Field100
Magnetic field provides radiation protection (a large close moon may help stir the core dynamo (speculative))

Physical Properties

Mass
0.80x Earth (4.78e+24 kg)
Radius
0.93x Earth (5,914 km)
This planet: 0.93× Earth radiusEarth: 1× (baseline)
Surface Gravity
0.93x Earth (9.1 m/s²)
Surface Temperature
148 K (-125 °C / -192 °F)
Rotation Period
18.0 hours/day (faster than Earth)
This planet: 18 h/dayEarth: 24 h/day

Orbital Environment

Star Type
G-type (Yellow (Sun-like))
Distance from Star
4.00 AU (598 million km)
Orbital Period
8.00 years

Atmosphere

Volcanic outgassing - sulfur compounds and vaporized rock

Elemental Composition

O - Oxygen
35.3%
H - Hydrogen
17.6%
Si - Silicon
17.6%

Surface Characteristics

Runaway tidal heating keeps the surface molten - volcanic activity everywhere

Closest Real Exoplanet

Teegarden's Star d82% similar
Orbiting Teegarden's Star
YoursTeegarden's Star d
Mass0.80 × Earth0.82 × Earth
Radius0.94 × Earth0.95 × Earth
Density (composition)5.27 g/cm³5.20 g/cm³
Temperature148.5 K159.0 K
Starlight received0.06 × Earth0.12 × Earth
Star temperature5,600 K3,034 K
Discovered 2024 via radial velocity · 12 light-years awaySource: NASA Exoplanet Archive
Moons
Moon 1receding1.6% - 6.0 radii

Outside the synchronous orbit: slowly receding, like Luna (~cm per year).

Tidal braking locked the planet to its moon: one face forever moonward.

Moon 2stable0.010% - 92.3 radii

Small and distant: a quiet, stable companion.

+5 temperature: large moon stabilizes the axial tilt - steady seasons-85 temperature: runaway tidal heating keeps the surface molten regardless of orbit+5 magneticField: a large close moon may help stir the core dynamo (speculative)
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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