Your planet has a balanced composition with all CHNOPS elements, proper mass (1.7x Earth), and sits in the habitable zone at 1.15 AU.
Earth-like planets have the perfect combination of composition, temperature, mass, and magnetic field to potentially support complex life as we know it.
Classification Criteria:
✓ All CHNOPS elements present (C, H, N, O, P, S)✓ Mass: 1.7x Earth (0.5-2.0x range)✓ Temperature: 261K (250-320K range)✓ Magnetic field present✓ Distance: 1.15 AU (habitable zone)
Habitability ScoreMarginal
57
Contributing Factors
water45
Limited water content - mostly frozen
geology90
Active geology recycles nutrients and drives carbon cycle
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry100
All CHNOPS elements present - building blocks of life (tidal pools cycle wet and dry - a boost for prebiotic chemistry)
atmosphere40
Nitrogen-oxygen atmosphere - breathable and protective (partially stripped by slow rotation)
temperature70
Challenging but potentially habitable temperature
magnetic Field100
Magnetic field provides radiation protection
Physical Properties
Mass
1.70x Earth (1.02e+25 kg)
Radius
1.19x Earth (7,604 km)
Surface Gravity
1.19x Earth (11.7 m/s²)
Surface Temperature
261 K (-12 °C / 10 °F)
Rotation Period
27.0 hours/day (slower than Earth)
Orbital Environment
Star Type
G-type (Yellow (Sun-like))
Distance from Star
1.15 AU (172 million km)
Orbital Period
1.23 years
Atmosphere
Nitrogen-oxygen atmosphere with trace CO₂, water vapor, and argon
Elemental Composition
O - Oxygen
20.6%
Si - Silicon
19.0%
Fe - Iron
17.5%
Surface Characteristics
Rocky surface with continents, oceans, and active plate tectonics. Diverse biomes if life present.
Tidal braking locked the planet to its moon: one face forever moonward.
+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry
Habitability
✓ Conditions could support lifeThis planet’s modelled conditions could support biological processes: stable temperatures, liquid water and the chemistry life as we know it needs. That makes life possible, not present.