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Entering orbit…
Habitability
29/ 100
Extremely Harsh

Sheperdias

0

Gas Giant

Magnetic FieldExtreme Activity
Why is this a Gas Giant?Your planet has 85.9% hydrogen and helium, combined with a mass of 60.0x 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: 85.9% (>60% required)✓ Mass: 60.0x Earth (>10x required)
Habitability ScoreExtremely Harsh
29
Contributing Factors
water15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans
geology40
Extreme volcanic activity may be hazardous
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry84
Core organic elements (CHNO) present (tidal pools cycle wet and dry - a boost for prebiotic chemistry)
atmosphere30
Hydrogen-rich atmosphere typical of gas giants
temperature20
Very cold - water frozen, challenging for life
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
60.00x Earth (3.58e+26 kg)
Radius
3.91x Earth (24,942 km)
This planet: 3.91× Earth radiusEarth: 1× (baseline)
Surface Gravity
3.91x Earth (38.4 m/s²)
Surface Temperature
117 K (-156 °C / -248 °F)
Rotation Period
10.0 hours/day (faster than Earth)
This planet: 10 h/dayEarth: 24 h/day

Orbital Environment

Star Type
SNR-type (Supernova Remnant)
Distance from Star
3.97 AU (594 million km)
Orbital Period
6.69 years

Atmosphere

Hydrogen and helium dominated with trace methane and ammonia

Elemental Composition

H - Hydrogen
55.6%
He - Helium
30.3%
C - Carbon
5.1%

Surface Characteristics

No solid surface - thick gaseous envelope with possible rocky core deep within

Closest Real Exoplanet

GJ 163 d74% similar
Orbiting GJ 163
YoursGJ 163 d
Mass60.0 × Earth29.4 × Earth
Radius6.34 × Earth5.92 × Earth
Density (composition)1.30 g/cm³0.78 g/cm³
Temperature117.4 K106.0 K
Starlight received0.03 × Earth0.02 × Earth
Star temperature— 3,500 K
Discovered 2013 via radial velocity · 49 light-years awaySource: NASA Exoplanet Archive
Moons
Moon 1stable0.00030% - 4.0 radii

Small and distant: a quiet, stable companion.

Moon 2stable0.00030% - 4.6 radii

Small and distant: a quiet, stable companion.

Moon 3stable0.00030% - 5.3 radii

Small and distant: a quiet, stable companion.

Moon 4stable0.00030% - 6.1 radii

Small and distant: a quiet, stable companion.

Moon 5stable0.00030% - 7.0 radii

Small and distant: a quiet, stable companion.

Moon 6stable0.00030% - 8.1 radii

Small and distant: a quiet, stable companion.

Moon 7stable0.00030% - 9.3 radii

Small and distant: a quiet, stable companion.

Moon 8stable0.00030% - 10.7 radii

Small and distant: a quiet, stable companion.

Moon 9stable0.00030% - 12.3 radii

Small and distant: a quiet, stable companion.

Moon 10stable0.00030% - 14.1 radii

Small and distant: a quiet, stable companion.

Moon 11stable0.00030% - 16.2 radii

Small and distant: a quiet, stable companion.

Moon 12stable0.00030% - 18.7 radii

Small and distant: a quiet, stable companion.

Moon 13stable0.00030% - 21.5 radii

Small and distant: a quiet, stable companion.

Moon 14stable0.00030% - 24.7 radii

Small and distant: a quiet, stable companion.

Moon 15stable0.00030% - 28.4 radii

Small and distant: a quiet, stable companion.

Moon 16stable0.00030% - 32.6 radii

Small and distant: a quiet, stable companion.

Moon 17stable0.00030% - 37.5 radii

Small and distant: a quiet, stable companion.

Moon 18stable0.0020% - 46.0 radii

Small and distant: a quiet, stable companion.

Moon 19stable0.0050% - 62.0 radii

Small and distant: a quiet, stable companion.

Moon 20stable0.020% - 97.0 radii

Small and distant: a quiet, stable companion.

+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry
Surface views from three worlds: rocky ground under a ringed sky, a cloud deck, and a lit desert

New: Stand on Your World 🏔️

Every planet you build can now be seen from the ground. The terrain, the color of the sky, the weather and what hangs overhead are all read from the same numbers that shape the globe — so a thin-aired world gives you sunlit rock under a near-black sky crowded with stars, a runaway greenhouse seals you under an unbroken sulfur lid, and a gas giant leaves you in the cloud tops with nothing solid beneath you at all. If one of your moons wandered inside the Roche limit, what is left of it arcs overhead as rings.

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