HD 20781 d · Asteria Star

Scientific overview

HD 20781 d is a mini-neptune orbiting HD 20781, completing an orbit every 29 days, about 117 light-years from Earth. It was discovered in 2019 using the radial velocity method.

Host star

HD 20781

Spectral type

K0 V

Temperature

5,256 K

Mass

0.7 M☉

Planetary system — HD 20781 system

View the HD 20781 system (4 known planets).

Planet	Class	Radius (R⊕)	Period (d)	Distance (ly)
HD 20781 bRadial Velocity · 2019	Terrestrial planet	1.21	5.3135	117
HD 20781 cRadial Velocity · 2019	Super-Earth	2.17	13.8905	117
HD 20781 dRadial Velocity · 2019	Mini-Neptune	3.25	29.158	117
HD 20781 eRadial Velocity · 2019	Mini-Neptune	3.83	85.5073	117

Discovery and detection

Detection method

Radial Velocity Method

Discovery year

2019

Discovered at

La Silla Observatory

Knowledge connections

OrbitsHD 20781
Member of systemHD 20781 system
Discovered by methodRadial Velocity Method
Discovered atLa Silla Observatory
Catalogued inNASA Exoplanet Archive

Loading…