Magnetic Field Extreme Activity
Why is this a Gas Giant? Your planet has 89.1% 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: 89.1% (>60% required) ✓ Mass: 10.1x Earth (>10x required)
Habitability Score Uninhabitable
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 65
Slow rotation - significant day/night temperature variations, but life can adapt Organic Chemistry 50
Carbon and hydrogen present - organic chemistry possible atmosphere 30
Hydrogen-rich atmosphere typical of gas giants temperature 0
Inferno world - temperatures exceed all possibility of 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
12,359 K (12,086 °C / 21,787 °F) Rotation Period
48.0 hours/day (slower than Earth) This planet: 48 h/day Earth: 24 h/day Orbital Environment Star Type
O-type (Blue Supergiant) Distance from Star
0.16 AU (23.9 million km) Time Dilation
Clocks run 1.5 minutes per year slower than deep space — about 1.9 hours over a lifetime 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 Orbiting KMT-2021-BLG-0171L Yours KMT-2021-BLG-0171L b Mass 10.1 × Earth 11.2 × Earth Radius 3.50 × Earth 3.35 × Earth Density (composition) 1.30 g/cm³ 1.64 g/cm³ Temperature 12,359 K — Starlight received 3,906,250 × Earth — Star temperature 35,000 K 5,200 K
Discovered 2022 via microlensing · 15,003 light-years away Source: NASA Exoplanet Archive Browse all 5,568 real exoplanets Learn more about exoplanets