Water World Magnetic Field Moderate Activity
Why is this a Water World? Your planet has abundant oxygen (33.3%) and hydrogen (66.7%), 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.
✓ Oxygen: 33.3% + Hydrogen: 66.7% (water-forming elements) ✓ Temperature: 258K (habitable range) ✓ Distance: 0.86 AU (habitable zone)
Habitability Score Extremely Harsh
Contributing Factors water 60
Water present but mostly frozen — shielded under ice and rock, a subsurface refuge could outlast the blast geology 90
Active geology recycles nutrients and drives carbon cycle rotation 100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution Organic Chemistry 20
Limited organic chemistry potential atmosphere 100
Nitrogen-oxygen atmosphere - breathable and protective temperature 70
Challenging but potentially habitable temperature magnetic Field 100
Magnetic field provides radiation protection — but the remnant's shock fronts flood this orbit with cosmic rays Physical Properties Mass
1.00x Earth (5.97e+24 kg) Radius
1.00x Earth (6,371 km) This planet: 1.00× Earth radius Earth: 1× (baseline)
Surface Gravity
1.00x Earth (9.8 m/s²) Surface Temperature
258 K (-15 °C / 5 °F) Rotation Period
24.0 hours/day This planet: 24 h/day Earth: 24 h/day Orbital Environment Star Type
SNR-type (Supernova Remnant) Distance from Star
0.86 AU (129 million km) Atmosphere Nitrogen and oxygen with water vapor, mild greenhouse effect
Surface Characteristics Vast oceans covering most of the surface, scattered islands or archipelagos Closest Real Exoplanet GJ 1002 b 84% similar
Orbiting GJ 1002 Yours GJ 1002 b Mass 1.00 × Earth 1.08 × Earth Radius 1.22 × Earth 1.03 × Earth Density (composition) 3.00 g/cm³ 5.45 g/cm³ Temperature 258.1 K 231.0 K Starlight received 0.68 × Earth 0.67 × Earth Star temperature — 3,024 K
Discovered 2022 via radial velocity · 16 light-years away Source: NASA Exoplanet Archive Moons
Moon 1 rings 2.5% - 2.8 radii
Inside the Roche limit (2.80 planet radii): torn apart into a ring system.
