The HD 5319 System

2 planets Cetus

HD 5319 is a planetary system in the constellation Cetus hosting 2 confirmed exoplanets, about 396 light-years from Earth.

HD 5319: Star and Habitable Zone

HD 5319

Surface temperature: 4,871 K (Sun: 5,772 K)
Mass: 1.27 M☉
Radius: 4.06 R☉

HD 5319 b HD 5319 c

Too hot Optimistic habitable zone Conservative habitable zone Too cold

Habitable zone of HD 5319: 2.274–5.526 AU (conservative: 2.880–5.239 AU), per Kopparapu et al. (2014). Earth orbits the Sun at 1 AU.

See the full interactive habitable-zone view in the Exoplanet Explorer app ›

All 2 Planets in the HD 5319 System

Planet	Type	Orbit	Radius	ESI	Discovered
HD 5319 b	Cold Gas Giant	637 d	—	0.36	2007
HD 5319 c	Cold Gas Giant	872 d	—	0.31	2014

Discovery History

The first planet found here, HD 5319 b, was discovered in 2007 using the radial velocity method. The most recent addition, HD 5319 c, followed in 2014.

2007 — HD 5319 b (Radial Velocity)
2014 — HD 5319 c (Radial Velocity)

Frequently Asked Questions About HD 5319

How many planets does HD 5319 have?

HD 5319 has 2 confirmed exoplanets. More may await discovery.

Are any planets in the HD 5319 system habitable?

None of the known planets in HD 5319 orbit within the star's habitable zone.

How far away is HD 5319?

HD 5319 is about 396 light-years from Earth in the constellation Cetus.

Explore the HD 5319 system in the app

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