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L 98-59 f is a Super-Earth exoplanet (a planet larger than Earth but smaller than Neptune) with a mass of 2.8 Earth masses. With an equilibrium temperature of 285 K (12°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 23.1 Earth days. It was discovered in 2025 using the radial velocity method. It orbits the M-type star L 98-59, located approximately 11 parsecs (35 light-years) from Earth.
2025
Discovered
2.8
Earth Masses
285
Temperature (K)
Discovery Information
Discovery MethodRadial Velocity
Discovery Year2,025
Discovery FacilityMultiple Facilities
Orbital Properties
Orbital Period23.064 days
Semi-Major Axis0.1052 AU
Eccentricity0.044
Inclination74 deg
Physical Properties
Mass (Jupiter)0.0088 MJ
Mass (Earth)2.8 M⊕
Density5 g/cm3
Eq. Temperature285 K
Insolation Flux1.1 S⊕
Planetary Extremes
Where L 98-59 f sits on the spectrum of all known exoplanets.
Mass2.8 M⊕
FeatherweightColossus
Temperature285 K
FrozenInferno
Year Length23.1 days
LightningGlacial
Density5.00 g/cm³
FluffyIron-dense
Star Distance0.105 AU
ScorchedFrozen exile
Star System View
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Orbit Comparison
Earth: 365.25 days (1 AU)L 98-59 f: 23.1 Earth days (0.105 AU)
Host Star: L 98-59
Spectral TypeM3 V
Effective Temperature3,415 K
Mass0.2923 M☉
Radius0.3155 R☉
Size vs Sun3.17x smaller
Luminosity0.0122 L☉
Luminosity vs Sun82.0x dimmer
Metallicity [Fe/H]-0.46
Distance (pc)10.6194 pc
Distance (ly)34.6 light-years
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