HD 5319

Starbox short
name=HD 5319
epoch=2000
constell=Cetus
ra=RA|00|55|01.4005
dec=DEC|+00|47|22.392
appmag_v=8.05
dist_ly=326
dist_pc=100
spectral=K0III
names=BD+00°142, HIP 4297, SAO 109532
Simbad=HD+5319

HD 5319 is an 8^th magnitude star approximately 326 light years away in the constellation Cetus. It is a giant star of spectral type K0, having run out of hydrogen in its core. When it was main-sequence, the spectral type was early F or late A.

The radius is more than three times that of the Sun, and the volume is 35 times greater. The star's mass is more than 1.5 times that of the Sun, which suggests much lower density.

The absolute magnitude (apparent magnitude at 10 parsecs) is 3.05, which would translate to easy naked eye visiblility, but its distance is ten times greater, so its apparent magnitude is 8.05 (100 times fainter than its absolute magnitude), it is not visible to the naked eye and binoculars are needed.

Planetary system

On January 11, 2007, the California and Carnegie Planet Search team found a 1.94 M_J planet HD 5319 b orbiting the giant star. It wasn’t published until May 27, 2007.

PlanetboxOrbit
exoplanet = b
mass = >1.94
period = 669.37
semimajor = 1.74
eccentricity = 0.12

See also

* HD 75898
* List of stars with confirmed extrasolar planets

References

* [http://arxiv.org/abs/0708.0832 web preprint]

External links

*