Jool
0
Gas Giant
✦ KerbolMagnetic FieldExtreme Activity
Why is this a Gas Giant?Your planet has 40.6% hydrogen and helium, combined with a mass of 77.0x 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.
Classification Criteria:
✓ Hydrogen + Helium: 40.6% (>60% required)✓ Mass: 77.0x Earth (>10x required)
Habitability ScoreExtremely Harsh
Contributing Factors
water15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans
geology50
Extreme volcanic activity may be hazardous (tidal flexing sustains geologic activity)
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry55
Core organic elements (CHNO) present - chlorine-laced environment attacks organic molecules
atmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)
temperature20
Very cold - water frozen, challenging for life
magnetic Field100
Magnetic field provides radiation protection
Physical Properties
Mass
77.00x Earth (4.60e+26 kg)Radius
4.25x Earth (27,104 km)Surface Gravity
4.25x Earth (41.7 m/s²)Surface Temperature
127 K (-147 °C / -232 °F)Rotation Period
1.0 hours/day (faster than Earth)Orbital Environment
Star Type
G-type (Yellow (Sun-like))Distance from Star
5.03 AU (752 million km)Orbital Period
11.3 yearsAtmosphere
Hydrogen and helium dominated with trace methane and ammonia
Elemental Composition
Cl - Chlorine
35.9%
He - Helium
26.6%
H - Hydrogen
14.1%
Surface Characteristics
No solid surface - thick gaseous envelope with possible rocky core deep withinClosest Real Exoplanet
GJ 414 A c74% similar
Orbiting GJ 414 A| Yours | GJ 414 A c | |
|---|---|---|
| Mass | 77.0 × Earth | 53.8 × Earth |
| Radius | 6.88 × Earth | 8.40 × Earth |
| Density (composition) | 1.30 g/cm³ | 0.50 g/cm³ |
| Temperature | 126.6 K | 125.0 K |
| Starlight received | 0.04 × Earth | 0.06 × Earth |
| Star temperature | 5,600 K | 4,120 K |
MoonsLife may exist on a moon
Moon 1recedingOcean world - life0.14% - 8.0 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Tidal braking locked the planet to its moon: one face forever moonward.
Tidal heat sustains a subsurface ocean over a rock seafloor: a strong candidate for life (Europa-like, 63/100).
Moon 2receding0.050% - 15.8 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Moon 3receding0.25% - 24.0 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Moon 4receding0.071% - 61.7 radii
Outside the synchronous orbit: slowly receding, like Luna (~cm per year).
Moon 5stable0.0025% - 4.5 radii
Small and distant: a quiet, stable companion.