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GJ 357 b | Exoplanets | Apex Andromeda | Apex Andromeda

Planets/Exoplanets/GJ 357 b

Confirmed exoplanet · Terrestrial

GJ 357 b

Orbiting GJ 357

Discovered in 2019 using Transit. This page reflects the latest synchronized NASA Exoplanet Archive composite record.

NASA Archive record ↗Back to catalog →

Generic terrestrial catalog artwork; not a direct image of GJ 357 b — Generic category artwork—not a direct imageApex Andromeda catalog artwork

Discovery: 2,019
Method: Transit
Radius: 1.2 R⊕
Mass: 1.83 M⊕
Orbit: 3.9306 days
Distance: 9.44181 pc

Planet profile

Orbit and physical properties

Orbital period: 3.9306 days
Semi-major axis: 0.036 AU
Eccentricity: Not reported by the NASA Exoplanet Archive
Radius: 1.2 Earth radii
Mass: 1.83 Earth masses
Mass provenance: Mass
Density: 5.6 g/cm³
Equilibrium temperature: 518 K
Insolation: 12.6 Earth flux

Host system

Star and system properties

Host star: GJ 357
Stars in system: 1
Known planets in system: 3
Spectral type: M2.5 V
Stellar temperature: 3,505 K
Stellar radius: 0.337 R☉
Stellar mass: 0.342 M☉
Stellar metallicity: -0.12 dex
Stellar age: Not reported by the NASA Exoplanet Archive
Distance: 9.44181 parsecs
Right ascension: 09h36m01.79s
Declination: -21d39m54.23s

Discovery

Detection and provenance

Discovery method: Transit
Discovery year: 2,019
Publication date: 2019-08
Discovery locale: Space
Facility: Transiting Exoplanet Survey Satellite (TESS)
Telescope: 0.1 m TESS Telescope
Instrument: TESS CCD Array
NASA Exoplanet Archive: Open composite record ↗

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