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2019
Discovered
6.1
Earth Masses
220
Temperature (K)
Discovery Information
Discovery MethodRadial Velocity
Discovery Year2,019
Discovery FacilityMultiple Observatories
Orbital Properties
Orbital Period55.661 days
Semi-Major Axis0.204 AU
Physical Properties
Mass (Jupiter)0.0192 MJ
Mass (Earth)6.1 M⊕
Eq. Temperature219.6 K
Insolation Flux0.38 S⊕
Planetary Extremes
Where GJ 357 d sits on the spectrum of all known exoplanets.
Mass6.1 M⊕
FeatherweightColossus
Temperature220 K
FrozenInferno
Year Length55.7 days
LightningGlacial
Star Distance0.204 AU
ScorchedFrozen exile
Orbit Comparison
Earth: 365.25 days (1 AU)GJ 357 d: 55.7 Earth days (0.204 AU)
Host Star: GJ 357
Spectral TypeM2.5 V
Effective Temperature3,505 K
Mass0.342 M☉
Radius0.337 R☉
Size vs Sun2.97x smaller
Luminosity0.0159 L☉
Luminosity vs Sun62.9x dimmer
Metallicity [Fe/H]-0.12
Distance (pc)9.4418 pc
Distance (ly)30.8 light-years
Star System View
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Other Planets in the GJ 357 System
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