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2022
Discovered
0.4
Earth Masses
292
Temperature (K)
Discovery Information
Discovery MethodTransit Timing Variations
Discovery Year2,022
Discovery FacilityMultiple Observatories
Orbital Properties
Orbital Period38.23 days
Semi-Major Axis0.1803 AU
Eccentricity0.112
Inclination88.53 deg
Physical Properties
Mass (Jupiter)0.0014 MJ
Mass (Earth)0.43 M⊕
Eq. Temperature292 K
Insolation Flux1.73 S⊕
Planetary Extremes
Where Kepler-138 e sits on the spectrum of all known exoplanets.
Mass0.4 M⊕
FeatherweightColossus
Temperature292 K
FrozenInferno
Year Length38.2 days
LightningGlacial
Star Distance0.180 AU
ScorchedFrozen exile
Star System View
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Orbit Comparison
Earth: 365.25 days (1 AU)Kepler-138 e: 38.2 Earth days (0.180 AU)
Host Star: Kepler-138
Effective Temperature3,841 K
Mass0.535 M☉
Radius0.535 R☉
Size vs Sun1.87x smaller
Luminosity0.056 L☉
Luminosity vs Sun17.9x dimmer
Metallicity [Fe/H]-0.18
Distance (pc)66.8624 pc
Distance (ly)218.1 light-years
Other Planets in the Kepler-138 System
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