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Entering orbit…
Habitability
40/ 100
Marginal

Nero

0

Water World

Magnetic FieldModerate Activity
Why is this a Water World?Your planet has abundant oxygen (28.6%) and hydrogen (28.6%), creating extensive water coverage while in the habitable temperature zone.
Water worlds have deep global oceans covering most or all of their surface. They form when planets have high water content and orbit in the habitable zone.
Classification Criteria:
✓ Oxygen: 28.6% + Hydrogen: 28.6% (water-forming elements)✓ Temperature: 285K (habitable range)✓ Distance: 0.96 AU (habitable zone)
Habitability ScoreMarginal
40
Contributing Factors
water100
Abundant liquid water at surface temperature
geology90
Active geology recycles nutrients and drives carbon cycle
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry20
Limited organic chemistry potential
atmosphere100
Nitrogen-oxygen atmosphere - breathable and protective
temperature100
Optimal temperature range for liquid water and life
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
1.00x Earth (5.97e+24 kg)
Radius
1.00x Earth (6,371 km)
This planet: 1.00× Earth radiusEarth: 1× (baseline)
Surface Gravity
1.00x Earth (9.8 m/s²)
Surface Temperature
285 K (12 °C / 54 °F)
Rotation Period
24.0 hours/day
This planet: 24 h/dayEarth: 24 h/day

Orbital Environment

Star Type
G-type (Yellow (Sun-like))
Distance from Star
0.96 AU (144 million km)
Orbital Period
344 days

Atmosphere

Nitrogen and oxygen with water vapor, mild greenhouse effect

Elemental Composition

H - Hydrogen
28.6%
O - Oxygen
28.6%
Fe - Iron
14.3%

Surface Characteristics

Vast oceans covering most of the surface, scattered islands or archipelagos

Closest Real Exoplanet

TOI-700 e82% similar
Orbiting TOI-700
YoursTOI-700 e
Mass1.00 × Earth0.82 × Earth
Radius1.22 × Earth0.95 × Earth
Density (composition)3.00 g/cm³5.21 g/cm³
Temperature285.4 K273.0 K
Starlight received1.09 × Earth1.27 × Earth
Star temperature5,600 K3,459 K
Discovered 2023 via transit · 101 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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