Habitability
12/ 100
Uninhabitable

S46 Ashtheria

by Metamorphohedron1111
0

Venus Like

Magnetic FieldModerate Activity
Why is this a Venus Like?Your planet has a thick CO₂ atmosphere creating a runaway greenhouse effect, with surface temperatures of 556K.
Venus-like planets experience runaway greenhouse warming where CO₂ traps heat, evaporating oceans and creating hostile conditions despite being in the habitable zone.
Classification Criteria:
✓ Temperature: 556K (500-800K range)✓ CO₂-rich atmosphere creating greenhouse effect
Habitability ScoreUninhabitable
12
Contributing Factors
water0
No water - the recipe has no hydrogen and oxygen to form it
geology100
Active geology recycles nutrients and drives carbon cycle (tidal flexing sustains geologic activity)
rotation10
Near tidally locked - one hemisphere perpetually scorched, other frozen, narrow habitable twilight zone only
Organic Chemistry20
Limited organic chemistry potential
atmosphere14
Dense CO₂ atmosphere with extreme greenhouse effect (partially stripped by slow rotation)
temperature15
Extremely hot - hostile to known life forms
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
0.90x Earth (5.37e+24 kg)
Radius
0.97x Earth (6,151 km)
This planet: 0.97× Earth radiusEarth: 1× (baseline)
Surface Gravity
0.97x Earth (9.5 m/s²)
Surface Temperature
556 K (283 °C / 541 °F)
Rotation Period
18.0 hours/day (faster than Earth)
This planet: 18 h/dayEarth: 24 h/day

Orbital Environment

Star Type
G-type (Yellow (Sun-like))
Distance from Star
0.25 AU (37.4 million km)

Atmosphere

Dense CO₂ atmosphere with sulfuric acid clouds, extreme greenhouse effect

Elemental Composition

S - Sulfur
37.8%
O - Oxygen
22.5%
C - Carbon
18.0%

Surface Characteristics

Rocky surface with volcanic plains, extreme pressure and heat

Closest Real Exoplanet

Kepler-395 b91% similar
Orbiting Kepler-395
YoursKepler-395 b
Mass0.90 × Earth1.08 × Earth
Radius0.97 × Earth1.03 × Earth
Temperature556.0 K576.0 K
Starlight received16.0 × Earth17.8 × Earth
Star temperature5,600 K4,262 K
Discovered 2014 via transit · 1,373 light-years awaySource: NASA Exoplanet Archive
Moons
Moon 1rings0.023% - 2.3 radii

Inside the Roche limit (2.80 planet radii): torn apart into a ring system.

Moon 2receding0.074% - 7.2 radii

Outside the synchronous orbit: slowly receding, like Luna (~cm per year).

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

Moon 3receding0.30% - 19.8 radii

Outside the synchronous orbit: slowly receding, like Luna (~cm per year).

+10 geology: tidal flexing sustains geologic activity+4 chemistry: tidal pools cycle wet and dry - a boost for prebiotic chemistry