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
60/ 100
Habitable

Mann's planet

by Aidan8Planets29
0

Ice World

Magnetic FieldLow Activity
Why is this a Ice World?Your planet orbits at 33.20 AU from its star, resulting in frigid temperatures of 230K.
Ice worlds form beyond the frost line where temperatures are low enough for water and other volatiles to freeze solid. They may have subsurface oceans beneath thick ice shells.
Classification Criteria:
✓ Distance: 33.20 AU (>3 AU) or Temperature <200K✓ Temperature: 230K✓ Water content: 44.1% for ice formation
Habitability ScoreHabitable
60
Contributing Factors
water60
Water present but mostly frozen
geology60
Some geological activity provides slow nutrient cycling
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry80
Core organic elements (CHNO) present
atmosphere70
Nitrogen atmosphere provides protection but not breathable
temperature40
Extreme temperature - very difficult for life
magnetic Field100
Magnetic field provides radiation protection — but the black hole's accretion disk bathes this orbit in hard X-ray radiation

Physical Properties

Mass
0.80x Earth (4.78e+24 kg)
Radius
0.93x Earth (5,914 km)
This planet: 0.93× Earth radiusEarth: 1× (baseline)
Surface Gravity
0.93x Earth (9.1 m/s²)
Surface Temperature
230 K (-43 °C / -45 °F)
Rotation Period
18.0 hours/day (faster than Earth)
This planet: 18 h/dayEarth: 24 h/day

Orbital Environment

Star Type
BH-type (Black Hole)
Distance from Star
33.20 AU (4.97 billion km)
Orbital Period
60.5 years

Atmosphere

Thin nitrogen and methane atmosphere

Elemental Composition

O - Oxygen
35.3%
H - Hydrogen
17.6%
Si - Silicon
17.6%

Surface Characteristics

Frozen surface covered in water ice, possible subsurface ocean if tidal heating present

Closest Real Exoplanet

TRAPPIST-1 f84% similar
Orbiting TRAPPIST-1
YoursTRAPPIST-1 f
Mass0.80 × Earth1.04 × Earth
Radius1.14 × Earth1.04 × Earth
Density (composition)3.00 g/cm³5.09 g/cm³
Temperature230.5 K218.0 K
Starlight received0.36 × Earth0.37 × Earth
Star temperature— 2,566 K
Matched on physical properties only — no confirmed exoplanet orbits a black hole.Discovered 2017 via transit · 40 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