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HD 5319 b

HIP 4297 b

Proper NameNone
DesignationsHD 5319 b, HIP 4297 b, TYC 12-104-1 b, GAIA DR2 2537319343919089024 b
ClassificationGas Giant
Orbital Period641 days
Mean Distance from HD 5319249.8 million km
1.67 AU
Mass1.8 x Jupiter
DiameterNot known
Temperature304 K (31°C)
Parent starHD 5319, orange giant in Cetus
Other planets in this systemHD 5319 c, gas giant
NotesOne of a pair of massive gas giants in orbit around the orange giant star HD 5319, some 396 light years from the Sun. HD 5319 b has nearly twice the mass of Jupiter, and is the innermost of the two planets with a semi-major axis of 1.67 AU (comparable with the orbit of Mars within the Solar System). Its companion planet HD 5319 c is somewhat less massive, and orbits another half an Astronomical Unit from the star.