Habitability
63/ 100
Habitable

marnailia

by Mauzler5
0

Barren

✦ shuban
Magnetic FieldHigh Activity
Why is this a Barren?Your planet has an unusual composition that doesn't fit standard classifications, or lacks the elements needed for complex geological processes.
Barren worlds can form from uncommon element combinations or may be remnants of larger bodies that lost their atmospheres and volatile materials.
Classification Criteria:
Composition doesn't match standard planet typesMass: 2.1x EarthTemperature: 252K
Habitability ScoreHabitable
63
Contributing Factors
water60
Water present but mostly frozen
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
atmosphere28
Nitrogen atmosphere provides protection but not breathable (partially stripped by slow rotation)
temperature70
Challenging but potentially habitable temperature
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
2.10x Earth (1.25e+25 kg)
Radius
1.28x Earth (8,159 km)
This planet: 1.28× Earth radiusEarth: 1× (baseline)
Surface Gravity
1.28x Earth (12.6 m/s²)
Surface Temperature
252 K (-21 °C / -5 °F)
Rotation Period
11.0 hours/day (faster than Earth)
This planet: 11 h/dayEarth: 24 h/day

Orbital Environment

Star Type
G-type (Yellow (Sun-like))
Distance from Star
1.33 AU (199 million km)

Atmosphere

Thin CO₂ and nitrogen atmosphere

Elemental Composition

O - Oxygen
23.4%
Fe - Iron
16.0%
N - Nitrogen
11.5%

Surface Characteristics

Barren rocky surface with unusual elemental composition

Closest Real Exoplanet

Kepler-442 b92% similar
Orbiting Kepler-442
YoursKepler-442 b
Mass2.10 × Earth2.36 × Earth
Radius1.28 × Earth1.34 × Earth
Temperature252.4 K241.0 K
Starlight received0.57 × Earth0.66 × Earth
Star temperature5,600 K4,402 K
Discovered 2015 via transit · 1,194 light-years awaySource: NASA Exoplanet Archive
Moons
Moon 1stable0.035% - 4.4 radii

Small and distant: a quiet, stable companion.

Tidal braking locked the planet to its moon: one face forever moonward.

Moon 2stable0.043% - 14.2 radii

Small and distant: a quiet, stable companion.

Moon 3stable0.030% - 81.1 radii

Small and distant: a quiet, stable companion.