GJ 357 b · Asteria Star

Scientific overview

GJ 357 b is a terrestrial planet orbiting GJ 357, completing an orbit every 4 days, about 31 light-years from Earth. It was discovered in 2019 using the transit method.

Host star

GJ 357

Spectral type

M2.5 V

Temperature

3,505 K

Mass

0.342 M☉

Planetary system — GJ 357 system

View the GJ 357 system (3 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
GJ 357 bTransit · 2019	Terrestrial planet	1.2	3.9306	31
GJ 357 cRadial Velocity · 2019	Super-Earth	1.66	9.1247	31
GJ 357 dRadial Velocity · 2019	Super-Earth	2.34	55.661	31

Discovery and detection

Detection method

Transit Method

Discovery year

2019

Discovered at

TESS

Knowledge connections

OrbitsGJ 357
Member of systemGJ 357 system
Discovered by methodTransit Method
Discovered by missionTESS
Catalogued inNASA Exoplanet Archive

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