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Gas Giant

TOI-172 b

Orbiting TOI-172 | 342.8 parsecs away

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TOI-172 b is a Gas Giant exoplanet (a massive planet composed primarily of hydrogen and helium), about 10.8 times the radius of Earth. Its scorching equilibrium temperature of 1198 K (925°C) makes it far too hot for liquid water. The planet completes one orbit around its star every 9.5 Earth days. It was discovered in 2019 using the transit method. It orbits the star TOI-172, located approximately 343 parsecs (1118 light-years) from Earth.

2019

Discovered

1722.6

Earth Masses

10.82

Earth Radii

1198

Temperature (K)

Discovery Information

Discovery MethodTransit
Discovery Year2,019
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)

Orbital Properties

Orbital Period9.4773 days
Semi-Major Axis0.0914 AU
Eccentricity0.3806
Inclination88.2 deg

Physical Properties

Mass (Jupiter)5.42 MJ
Mass (Earth)1,722.6386 M⊕
Radius (Jupiter)0.965 RJ
Radius (Earth)10.8167 R⊕
Density7.53 g/cm3
Eq. Temperature1,198 K
Insolation Flux299 S⊕
Planetary Extremes

Where TOI-172 b sits on the spectrum of all known exoplanets.

Mass1722.6 M⊕
FeatherweightColossus
Radius10.82 R⊕
TinyEnormous
Temperature1198 K
FrozenInferno
Year Length9.5 days
LightningGlacial
Density7.53 g/cm³
FluffyIron-dense
Star Distance0.091 AU
ScorchedFrozen exile
Star System View
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Size Comparison
EarthTOI-172 bJupiter

10.82x Earth's radius (0.97x Jupiter)

Orbit Comparison
EarthTOI-172 b
Earth: 365.25 days (1 AU)TOI-172 b: 9.5 Earth days (0.091 AU)
Host Star: TOI-172

Effective Temperature5,645 K
Mass1.128 M☉
Radius1.777 R☉
Size vs Sun1.78x larger
Luminosity2.89 L☉
Luminosity vs Sun2.890x brighter
Metallicity [Fe/H]0.148
Distance (pc)342.831 pc
Distance (ly)1118.2 light-years
Planets in the TOI-172 System

What If You Lived Here?

1030.6 kg

Your weight (from 70 kg)

14.72g

Lethal

No human could survive. You'd be pinned to the ground.

9.5 Earth days

Year length

Unknown sunrise

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Related Research

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