HD 128311 b · Asteria Star

Scientific overview

HD 128311 b is a gas giant orbiting HD 128311, completing an orbit every 453 days, about 53 light-years from Earth. It was discovered in 2002 using the radial velocity method.

Host star

HD 128311

Spectral type

K0

Temperature

4,965 K

Mass

0.828 M☉

Planetary system — HD 128311 system

View the HD 128311 system (2 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
HD 128311 bRadial Velocity · 2002	Gas giant	13.5	453	53
HD 128311 cRadial Velocity · 2005	Gas giant	13	922	53

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2002

Discovered at

W. M. Keck Observatory

Knowledge connections

OrbitsHD 128311
Member of systemHD 128311 system
Discovered by methodRadial Velocity Method
Discovered atW. M. Keck Observatory
Catalogued inNASA Exoplanet Archive

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