GJ 3138 d · Asteria Star

Scientific overview

GJ 3138 d is a mini-neptune orbiting GJ 3138, completing an orbit every 258 days, about 93 light-years from Earth. It was discovered in 2017 using the radial velocity method.

Host star

GJ 3138

Spectral type

M0

Temperature

3,717 K

Mass

0.681 M☉

Planetary system — GJ 3138 system

View the GJ 3138 system (3 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
GJ 3138 bRadial Velocity · 2017	Terrestrial planet	1.18	1.22	93
GJ 3138 cRadial Velocity · 2017	Super-Earth	1.88	5.974	93
GJ 3138 dRadial Velocity · 2017	Mini-Neptune	3.23	258	93

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2017

Discovered at

La Silla Observatory

Knowledge connections

OrbitsGJ 3138
Member of systemGJ 3138 system
Discovered by methodRadial Velocity Method
Discovered atLa Silla Observatory
Catalogued inNASA Exoplanet Archive

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