Sign in or create your account

Enter your email and we'll send a 6-digit code — no password needed.
We only keep your email and the username you choose. We never share or sell your email, and we don't send marketing — we use it only to email you a sign-in code. Learn more.
Entering orbit…
Habitability
0/ 100
Uninhabitable

Methane

0

Ice Giant

Magnetic FieldModerate Activity
Why is this a Ice Giant?Your planet has moderate mass (6.2x Earth) with significant water, carbon, and nitrogen content, characteristic of ice giants.
Ice giants like Uranus and Neptune have icy interiors with thick atmospheres of hydrogen and helium, but not enough to be classified as gas giants.
Classification Criteria:
✓ Mass: 6.2x Earth (5-20x range)✓ Water/Carbon/Nitrogen rich composition
Habitability ScoreUninhabitable
0
Contributing Factors
water15
No solid surface — any water is locked in a supercritical mantle and hot ice, not oceans
geology90
Active geology recycles nutrients and drives carbon cycle
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere12
Hydrogen-rich atmosphere typical of gas giants (partially stripped by slow rotation)
temperature0
Near absolute zero - all molecular activity ceases, impossible for life
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
6.20x Earth (3.70e+25 kg)
Radius
1.84x Earth (11,704 km)
This planet: 1.84× Earth radiusEarth: 1× (baseline)
Surface Gravity
1.84x Earth (18.0 m/s²)
Surface Temperature
2 K (-271 °C / -456 °F)
Rotation Period
1,683.0 hours/day (slower than Earth)
This planet: 1683 h/dayEarth: 24 h/day

Orbital Environment

Star Type
G-type (Yellow (Sun-like))
Distance from Star
47434.20 AU (7.1 trillion km)
Orbital Period
10,330,881 years

Atmosphere

Hydrogen and helium with water, methane, and ammonia ices

Elemental Composition

H - Hydrogen
40.0%
He - Helium
25.0%
C - Carbon
15.0%

Surface Characteristics

Icy mantle surrounding rocky core, with hydrogen-helium atmosphere

Closest Real Exoplanet

K2-402 b71% similar
Orbiting K2-402
YoursK2-402 b
Mass6.20 × Earth7.65 × Earth
Radius2.77 × Earth2.68 × Earth
Density (composition)1.60 g/cm³2.19 g/cm³
Temperature1.92 K—
Starlight received0.00 × Earth—
Star temperature5,600 K5,716 K
Discovered 2022 via transit · 1,706 light-years awaySource: NASA Exoplanet Archive
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.

Sign in or create your account

Enter your email and we'll send a 6-digit code — no password needed.
We only keep your email and the username you choose. We never share or sell your email, and we don't send marketing — we use it only to email you a sign-in code. Learn more.

Send feedback

We're still building out the best experience we can — and we'd love your input. Tell us about features you enjoy, ideas you'd like to see, or pain points where something feels off, and we'll know where to look next.

Type