HD 4313 is a K-type
subgiant located in the constellation of
Pisces
Pisces may refer to:
* Pisces, an obsolete (because of land vertebrates) taxonomic superclass including all fish
* Pisces (astrology), an astrological sign
* Pisces (constellation), a constellation
**Pisces Overdensity, an overdensity of stars in ...
. It hosts an extrasolar planet, and is drifting away from the
Solar System with a radial velocity of 14.67 km/s.
HD 4313 is a single star, which means it has no binary partners, at least in range of projected separations from 6.85 to 191.78
AU.
Physical properties
This is an aging star with a mass of nearly twice the
Sun, although different methods give mass estimates which differ as much as 0.5 .
[ It also is a swollen star with 5.14 times the radius, and has a cool temperature of 4966 k. The "IV" in the spectral class means it's a K-type subgiant star which is starting to exhaust the hydrogen at its core, and cooling and expanding to become a red giant.
]
Planetary system
HD 4313 has a superjovian
A super-Jupiter is a gas giant exoplanet that is more massive than the planet Jupiter. For example, companions at the planet–brown dwarf borderline have been called super-Jupiters, such as around the star Kappa Andromedae.
By 2011 there were ...
planet orbiting it. This planet was discovered in 2010.
References
{{DEFAULTSORT:HD 4313
K-type subgiants
Pisces (constellation)
003574
BD+07 104
J00454035+0750421
004313
Planetary systems with one confirmed planet