Habitability
30/ 100
Extremely Harsh

Uranus-345g

Ice World

Magnetic FieldLow Activity
Why is this a Ice World?Your planet orbits at 4.00 AU from its star, resulting in frigid temperatures of 139K.
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: 4.00 AU (>3 AU) or Temperature <200K✓ Temperature: 139K✓ Water content: 44.1% for ice formation
Habitability ScoreExtremely Harsh
30
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
temperature20
Very cold - water frozen, challenging for life
magnetic Field100
Magnetic field provides radiation protection

Physical Properties

Mass
0.80x Earth (4.78e+24 kg)
Radius
0.93x Earth (5914 km)
Surface Gravity
0.93x Earth (9.1 m/s²)
Surface Temperature
139 K (-134 °C / -209 °F)
Rotation Period
18.0 hours/day (faster than Earth)

Orbital Environment

Star Type
G-type (Yellow (Sun-like))
Distance from Star
4.00 AU (598391483 million km)

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

Teegarden's Star d80% similar
Orbiting Teegarden's Star
YoursTeegarden's Star d
Mass0.80 × Earth0.82 × Earth
Radius0.93 × Earth0.95 × Earth
Temperature139.0 K159.0 K
Starlight received0.06 × Earth0.12 × Earth
Star temperature5,600 K3,034 K
Discovered 2024 via radial velocity · 12 light-years awaySource: NASA Exoplanet Archive