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L 98-59 d is a Super-Earth exoplanet (a planet larger than Earth but smaller than Neptune), about 1.6 times the radius of Earth. It has an equilibrium temperature of 416 K (143°C). The planet completes one orbit around its star every 7.5 Earth days. It was discovered in 2019 using the transit method. It orbits the M-type star L 98-59, located approximately 11 parsecs (35 light-years) from Earth.
2019
Discovered
1.6
Earth Masses
1.63
Earth Radii
416
Temperature (K)
Discovery Information
Discovery MethodTransit
Discovery Year2,019
Discovery FacilityTransiting Exoplanet Survey Satellite (TESS)
Orbital Properties
Orbital Period7.4507 days
Semi-Major Axis0.0494 AU
Eccentricity0.006
Inclination88.44 deg
Physical Properties
Mass (Jupiter)0.0052 MJ
Mass (Earth)1.64 M⊕
Radius (Jupiter)0.1452 RJ
Radius (Earth)1.627 R⊕
Density2.2 g/cm3
Eq. Temperature416 K
Insolation Flux4.97 S⊕
Planetary Extremes
Where L 98-59 d sits on the spectrum of all known exoplanets.
Mass1.6 M⊕
FeatherweightColossus
Radius1.63 R⊕
TinyEnormous
Temperature416 K
FrozenInferno
Year Length7.5 days
LightningGlacial
Density2.20 g/cm³
FluffyIron-dense
Star Distance0.049 AU
ScorchedFrozen exile
Star System View
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Size Comparison
1.63x Earth's radius (0.15x Jupiter)
Orbit Comparison
Earth: 365.25 days (1 AU)L 98-59 d: 7.5 Earth days (0.049 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
What If You Lived Here?
43.4 kg
Your weight (from 70 kg)
0.62g
Light
Noticeably easier to move. You could jump much higher.
7.5 Earth days
Year length
Red sunrise
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