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TOI-4336 A b is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 2.1 times the radius of Earth. With an equilibrium temperature of 308 K (35°C), it lies within the habitable zone where liquid water could potentially exist on its surface. The planet completes one orbit around its star every 16.3 Earth days. It was discovered in 2024 using the transit method. It orbits the M-type star TOI-4336 A, located approximately 23 parsecs (74 light-years) from Earth.
2024
Discovered
2.12
Earth Radii
308
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,024
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period16.3363 days
Semi-Major Axis0.0872 AU
Inclination89.55 deg
Physical Properties
Radius (Jupiter)0.1891 RJ
Radius (Earth)2.12 R⊕
Eq. Temperature308 K
Insolation Flux1.5 S⊕
Planetary Extremes
Where TOI-4336 A b sits on the spectrum of all known exoplanets.
Radius2.12 R⊕
TinyEnormous
Temperature308 K
FrozenInferno
Year Length16.3 days
LightningGlacial
Star Distance0.087 AU
ScorchedFrozen exile
Star System View
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Size Comparison
2.12x Earth's radius (0.19x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)TOI-4336 A b: 16.3 Earth days (0.087 AU)
Host Star: TOI-4336 A
Spectral TypeM3.5+/-0.5
Effective Temperature3,298 K
Mass0.331 M☉
Radius0.328 R☉
Size vs Sun3.05x smaller
Luminosity0.0114 L☉
Luminosity vs Sun87.7x dimmer
Metallicity [Fe/H]-0.209
Distance (pc)22.5455 pc
Distance (ly)73.5 light-years
Planets in the TOI-4336 A System
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