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TOI-5789 e is a Neptune-like exoplanet (an ice giant with a thick atmosphere) with a mass of 11.6 Earth masses. It has an equilibrium temperature of 424 K (151°C). The planet completes one orbit around its star every 63.0 Earth days. It was discovered in 2026 using the radial velocity method. It orbits the K-type star TOI-5789, located approximately 20 parsecs (67 light-years) from Earth.
2026
Discovered
11.6
Earth Masses
424
Temperature (K)
Discovery Information
Discovery MethodRadial Velocity
Discovery Year2,026
Discovery FacilityMultiple Observatories
Orbital Properties
Orbital Period62.98 days
Semi-Major Axis0.2901 AU
Eccentricity0.071
Physical Properties
Mass (Jupiter)0.0365 MJ
Mass (Earth)11.61 M⊕
Eq. Temperature424 K
Planetary Extremes
Where TOI-5789 e sits on the spectrum of all known exoplanets.
Mass11.6 M⊕
FeatherweightColossus
Temperature424 K
FrozenInferno
Year Length63.0 days
LightningGlacial
Star Distance0.290 AU
ScorchedFrozen exile
Star System View
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Orbit Comparison
Earth: 365.25 days (1 AU)TOI-5789 e: 63.0 Earth days (0.290 AU)
Host Star: TOI-5789
Spectral TypeK1 V
Effective Temperature5,185 K
Mass0.821 M☉
Radius0.833 R☉
Size vs Sun1.20x smaller
Luminosity0.469 L☉
Luminosity vs Sun2.1x dimmer
Metallicity [Fe/H]-0.12
Distance (pc)20.4581 pc
Distance (ly)66.7 light-years
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