Why is this a Earth Like?Your planet has a balanced composition with all CHNOPS elements, proper mass (4.5x Earth), and sits in the habitable zone at 22.60 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: 4.5x Earth (0.5-2.0x range)✓ Temperature: 265K (250-320K range)✓ Magnetic field present✓ Distance: 22.60 AU (habitable zone)
Habitability ScoreHabitable
62
Contributing Factors
water84
Good water content - mostly frozen
geology90
Active geology recycles nutrients and drives carbon cycle
rotation65
Slow rotation - significant day/night temperature variations, but life can adapt
Organic Chemistry100
All CHNOPS elements present - building blocks of life (tidal pools cycle wet and dry - a boost for prebiotic chemistry)
atmosphere100
Nitrogen-oxygen atmosphere - breathable and protective
temperature70
Challenging but potentially habitable temperature
magnetic Field100
Magnetic field provides radiation protection — but the black hole's accretion disk bathes this orbit in hard X-ray radiation
Physical Properties
Mass
4.50x Earth (2.69e+25 kg)
Radius
1.65x Earth (10,518 km)
Surface Gravity
1.65x Earth (16.2 m/s²)
Surface Temperature
265 K (-8 °C / 18 °F)
Rotation Period
52.0 hours/day (slower than Earth)
Orbital Environment
Star Type
BH-type (Black Hole)
Distance from Star
22.60 AU (3.38 billion km)
Orbital Period
34.0 years
Atmosphere
Nitrogen-oxygen atmosphere with trace CO₂, water vapor, and argon
Elemental Composition
O - Oxygen
25.0%
Si - Silicon
22.9%
Fe - Iron
16.7%
Surface Characteristics
Rocky surface with continents, oceans, and active plate tectonics. Diverse biomes if life present.
Matched on physical properties only — no confirmed exoplanet orbits a black hole.Discovered 2017 via transit · 822 light-years awaySource: NASA Exoplanet Archive
+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry
Habitability
✓ Conditions suitable for life detectedThis planet exhibits the necessary conditions to support biological processes, including stable temperatures, liquid water, and protective magnetic fields.