Magnetic Field Extreme Activity
Why is this a Gas Giant? Your planet has 87.4% hydrogen and helium, combined with a mass of 10.1x Earth, which exceeds the gas giant threshold. Gas giants form when massive cores capture enormous atmospheres of light gases. They typically form beyond the 'frost line' where volatiles can condense.
✓ Hydrogen + Helium: 87.4% (>60% required) ✓ Mass: 10.1x Earth (>10x required)
Habitability Score Extremely Harsh
Contributing Factors water 15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans geology 40
Extreme volcanic activity may be hazardous rotation 60
Fast rotation - strong global wind patterns and weather systems, but manageable Organic Chemistry 80
Core organic elements (CHNO) present atmosphere 30
Hydrogen-rich atmosphere typical of gas giants temperature 20
Very cold - water frozen, challenging for life magnetic Field 100
Magnetic field provides radiation protection Physical Properties Mass
10.10x Earth (6.03e+25 kg) Radius
2.16x Earth (13,772 km) This planet: 2.16× Earth radius Earth: 1× (baseline)
Surface Gravity
2.16x Earth (21.2 m/s²) Surface Temperature
124 K (-149 °C / -236 °F) Rotation Period
10.0 hours/day (faster than Earth) This planet: 10 h/day Earth: 24 h/day Orbital Environment Star Type
G-type (Yellow (Sun-like)) Distance from Star
5.00 AU (748 million km) Atmosphere Hydrogen and helium dominated with trace methane and ammonia
Surface Characteristics No solid surface - thick gaseous envelope with possible rocky core deep within Closest Real Exoplanet GJ 229 b 82% similar
Orbiting GJ 229 Yours GJ 229 b Mass 10.1 × Earth 14.9 × Earth Radius 3.50 × Earth 3.97 × Earth Density (composition) 1.30 g/cm³ 1.31 g/cm³ Temperature 124.3 K 112.0 K Starlight received 0.04 × Earth 0.02 × Earth Star temperature 5,600 K 3,564 K
Discovered 2014 via radial velocity · 19 light-years away Source: NASA Exoplanet Archive Moons
Moon 1 rings 0.089% - 1.8 radii
Inside the synchronous orbit: it spiraled inward and was torn apart at the Roche limit (Phobos's fate).
