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.
Habitability
12/ 100
Uninhabitable

Dusty

0

Rocky Terrestrial

None Activity
Why is this a Rocky Terrestrial?Your planet is dominated by silicate (34.2%) and iron (20.5%) content, forming a rocky terrestrial body.
Rocky terrestrial planets are primarily composed of silicate rocks and metals. They're the most common type of small planet in the universe.
Classification Criteria:
✓ Silicon: 34.2% + Iron: 20.5% + Magnesium: 13.7%✓ Mass: 0.2x Earth (terrestrial range)
Habitability ScoreUninhabitable
12
Contributing Factors
water0
No water - the recipe has no hydrogen and oxygen to form it
geology30
Geologically dead - no nutrient recycling
rotation100
Optimal rotation period - balanced day/night cycle, moderate weather, and good heat distribution
Organic Chemistry20
Limited organic chemistry potential
atmosphere70
Nitrogen atmosphere provides protection but not breathable
temperature40
Extreme temperature - very difficult for life
magnetic Field30
No magnetic field - vulnerable to solar radiation

Physical Properties

Mass
0.20x Earth (1.19e+24 kg)
Radius
0.58x Earth (3,726 km)
This planet: 0.58× Earth radiusEarth: 1× (baseline)
Surface Gravity
0.58x Earth (5.7 m/s²)
Surface Temperature
225 K (-48 °C / -55 °F)
Rotation Period
25.0 hours/day (slower than Earth)
This planet: 25 h/dayEarth: 24 h/day

Orbital Environment

Star Type
G-type (Yellow (Sun-like))
Distance from Star
1.53 AU (229 million km)
Orbital Period
1.89 years

Atmosphere

Thin CO₂ and nitrogen atmosphere

Elemental Composition

Si - Silicon
34.2%
O - Oxygen
20.5%
Fe - Iron
20.5%

Surface Characteristics

Rocky surface with impact craters, possible volcanic features

Closest Real Exoplanet

Kepler-963 c74% similar
Orbiting Kepler-963
YoursKepler-963 c
Mass0.20 × Earth0.16 × Earth
Radius0.66 × Earth0.60 × Earth
Density (composition)3.90 g/cm³3.98 g/cm³
Temperature225.0 K
Starlight received0.43 × Earth
Star temperature5,600 K5,169 K
Discovered 2024 via transit · 2,515 light-years awaySource: NASA Exoplanet Archive
Moons
Moon 1stable0.00010% - 7.1 radii

Small and distant: a quiet, stable companion.

Moon 2stable0.00010% - 13.0 radii

Small and distant: a quiet, stable companion.

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