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TOI-1759 b is a Neptune-like exoplanet (an ice giant with a thick atmosphere), about 3.1 times the radius of Earth. It has an equilibrium temperature of 443 K (170°C). The planet completes one orbit around its star every 18.9 Earth days. It was discovered in 2022 using the transit method. It orbits the M-type star TOI-1759, located approximately 40 parsecs (131 light-years) from Earth.
2022
Discovered
10.8
Earth Masses
3.14
Earth Radii
443
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,022
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period18.8502 days
Semi-Major Axis0.1177 AU
Eccentricity0
Inclination89.72 deg
Physical Properties
Mass (Jupiter)0.034 MJ
Mass (Earth)10.8 M⊕
Radius (Jupiter)0.2801 RJ
Radius (Earth)3.14 R⊕
Density1.91 g/cm3
Eq. Temperature443 K
Insolation Flux6.39 S⊕
Planetary Extremes
Where TOI-1759 b sits on the spectrum of all known exoplanets.
Mass10.8 M⊕
FeatherweightColossus
Radius3.14 R⊕
TinyEnormous
Temperature443 K
FrozenInferno
Year Length18.9 days
LightningGlacial
Density1.91 g/cm³
FluffyIron-dense
Star Distance0.118 AU
ScorchedFrozen exile
Star System View
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Size Comparison
3.14x Earth's radius (0.28x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)TOI-1759 b: 18.9 Earth days (0.118 AU)
Host Star: TOI-1759
Spectral TypeM0.0 V
Effective Temperature4,065 K
Mass0.606 M☉
Radius0.597 R☉
Size vs Sun1.68x smaller
Luminosity0.0877 L☉
Luminosity vs Sun11.4x dimmer
Metallicity [Fe/H]0.05
Distance (pc)40.0654 pc
Distance (ly)130.7 light-years
Planets in the TOI-1759 System
What If You Lived Here?
76.7 kg
Your weight (from 70 kg)
1.10g
Earth-like
Feels just like home — comfortably familiar.
18.9 Earth days
Year length
Red sunrise
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