Habitability
11/ 100
Uninhabitable

Gargantua B

by Stargazer
Magnetic FieldModerate Activity
Why is this a Rocky Terrestrial?Your planet is dominated by silicate (18.1%) and iron (12.0%) 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: 18.1% + Iron: 12.0% + Magnesium: 0.0%✓ Mass: 0.9x Earth (terrestrial range)
Habitability ScoreUninhabitable
11
Contributing Factors
water0
No water - the recipe has no hydrogen and oxygen to form it
geology90
Active geology recycles nutrients and drives carbon cycle
rotation25
Very fast rotation - perpetual hurricane-force winds, extreme Coriolis effects, hazardous for complex life
Organic Chemistry20
Limited organic chemistry potential
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
0.90x Earth (5.37e+24 kg)
Radius
0.97x Earth (6151 km)
Surface Gravity
0.97x Earth (9.5 m/s²)
Surface Temperature
151 K (-122 °C / -188 °F)
Rotation Period
4.0 hours/day (faster than Earth)

Orbital Environment

Star Type
BH-type (Black Hole)
Distance from Star
67.70 AU (10127775846 million km)

Atmosphere

Thin CO₂ and nitrogen atmosphere

Elemental Composition

O - Oxygen
30.1%
C - Carbon
24.1%
Si - Silicon
18.1%

Surface Characteristics

Rocky surface with impact craters, possible volcanic features

Closest Real Exoplanet

Teegarden's Star d91% similar
Orbiting Teegarden's Star
YoursTeegarden's Star d
Mass0.90 × Earth0.82 × Earth
Radius0.97 × Earth0.95 × Earth
Temperature151.1 K159.0 K
Starlight received0.09 × Earth0.12 × Earth
Star temperature 3,034 K
Matched on physical properties only — no confirmed exoplanet orbits a black hole.Discovered 2024 via radial velocity · 12 light-years awaySource: NASA Exoplanet Archive