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2024
Discovered
3.9
Earth Masses
0.96
Earth Radii
315
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,024
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period12.7614 days
Semi-Major Axis0.0668 AU
Eccentricity0.5
Inclination89.194 deg
Physical Properties
Mass (Jupiter)0.0122 MJ
Mass (Earth)3.87 M⊕
Radius (Jupiter)0.0855 RJ
Radius (Earth)0.958 R⊕
Eq. Temperature314.6 K
Insolation Flux1.62 S⊕
Planetary Extremes
Where Gliese 12 b sits on the spectrum of all known exoplanets.
Mass3.9 M⊕
FeatherweightColossus
Radius0.96 R⊕
TinyEnormous
Temperature315 K
FrozenInferno
Year Length12.8 days
LightningGlacial
Star Distance0.067 AU
ScorchedFrozen exile
Star System View
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Size Comparison
0.96x Earth's radius
Orbit Comparison
Earth: 365.25 days (1 AU)Gliese 12 b: 12.8 Earth days (0.067 AU)
Host Star: Gliese 12
Spectral TypeM3.0 V
Effective Temperature3,296 K
Mass0.2414 M☉
Radius0.2617 R☉
Size vs Sun3.82x smaller
Luminosity0.0073 L☉
Luminosity vs Sun137.4x dimmer
Metallicity [Fe/H]-0.32
Distance (pc)12.21 pc
Distance (ly)39.8 light-years
What If You Lived Here?
295.2 kg
Your weight (from 70 kg)
4.22g
Crushing
Standing upright is a struggle. Your body feels like lead.
12.8 Earth days
Year length
Red sunrise
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