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Kappa Andromedae
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Star Kappa Andromedae

Subgiant Kappa Andromedae is located 168 light years away from the Sun. It is a single star of spectral class B9 IVn, that has 277 % of solar mass. There is at least one exoplanet in this system.
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Sun distance
168 light years
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Kappa Andromedae

Subgiant
Spectral class: B9 IVn

Location +

Ascension iconRight ascension: 23h 40m 24.508s
Declination iconDeclination: 44° 20' 2.157'' (northern hemisphere)
Parallax iconParallax: 19.370
Distance iconSun distance: 168.382 ly | 51.6 pc
Star position
The position of a star tells us where it appears in the sky, similar to how we use coordinates like latitude and longitude on Earth. In astronomy, the three main coordinates are right ascension, declination and distance. .. icon More about Star position in StellarGuide

Basic characteristic

icon weight
Mass: 276.8 % M Sun
| 2900 M Jupiter
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Star mass
Mass of the star Kappa Andromedae is 2.768 solar masses.

The mass of a star is the total amount of matter it contains. It is one of the most important properties of a star, as it determines almost everything about how the star lives, changes, and dies. In astronomy, star mass is usually measured in solar masses (M☉) — where 1 solar mass is equal to the mass of our Sun... icon More about Star mass in StellarGuide
radius icon
Size: 229 % R Sun
| 22.8 R Jupiter
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Star size
Radius of the star Kappa Andromedae is 2.29 solar radii.

The size of a star refers to its radius — the distance from its center to its surface. Star size is usually measured in solar radii (R☉), where 1 solar radius equals approximately 696,000 kilometers. Depending on their type and life stage, stars can be much smaller or larger than the Sun... icon More about Star size in StellarGuide
temperature icon
Temperature: 11361 K | 1.97 T Sun
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Star temperature
Surface temperature of Kappa Andromedae is 11361 K, which is 197 % of the temperature on the surface of the Sun.

The temperature of a star refers to the temperature at its surface, also called the photosphere. It is measured in kelvins (K), the standard unit for temperature in astronomy. A star’s temperature tells us a lot about its physical properties and where it stands in its evolutionary stage... icon More about Star temperature in StellarGuide
time icon
Age: 0.047 billions years | 0.01 Sun
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Star age
Star Kappa Andromedae is 0.047 billion years old, which is about 0.01 of the Sun's age.

The age of a star tells us how long it has been shining since it formed. Knowing a star’s age helps astronomers understand its life stage, how it has changed over time, and what will happen to it in the future... icon More about Star age in StellarGuide
luminosity icon
Luminosity: 78.5 L Sun
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Star luminosity
Luminosity is the total amount of energy a star gives off every second. Think of it as the star’s true brightness — not just how bright it looks from Earth. This is important because some stars may appear dim simply because they are far away, not because they’re actually faint... icon More about Star luminosity in StellarGuide

Photometry

Magnitude iconApparent magnitude (V): 4.1
Magnitude iconAbsolute magnitude (V): 0.6
Absolute stellar magnitude in different parts of the electromagnetic spectrum from infrared (K band) to ultraviolet (U band).
5
10
15
20
25
30
35
K
2.1
H
1.6
J
1.2
Grp
0.8
I
0.8
G
0.6
V
0.5
Gbp
0.5
B
0.4
U
0.3
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Kappa Andromedae system structure

 Kappa Andromedae
Kappa Andromedae b 100 AU 4132.8 M⊕ 182500 days

More about Kappa Andromedae

Star Kappa Andromedae is a main sequence star that fuses hydrogen atoms into helium. It is is approximately 2 times bigger than the Sun and temperature on its surface is around 11361 K (11088 °C), which is about 197 % of Sun's temperature.
       Kappa Andromedae can be found in northern celestial hemisphere, and it is possible to see it with naked eye. The star is easily observable from Northern America, Europe and Asia.
Other designations of this star
κ And, 19 Andromedae, BD+43°4522, FK5 1619, HD 222439, HIC 116805, HIP 116805, HR 8976, SAO 53264, κ Andromedae
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External sources
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Frequently Asked Questions

How far is the Kappa Andromedae system from the Sun?

The Kappa Andromedae system is 168 light years or 51.6 parsecs from the Sun.

What galaxy is the Kappa Andromedae star in?

The Kappa Andromedae is in the Milky Way galaxy just like the Sun.

How many stars are in the Kappa Andromedae system?

The Kappa Andromedae is a single star, there are no other known stars in the system.

What type of star is the Kappa Andromedae?

The star Kappa Andromedae is a Subgiant star.

What temperature is star Kappa Andromedae?

The star Kappa Andromedae has an effective temperature of 11361 K. Find out more about the temperature of stars in Stellar guide
Class of stars Subgiant
A subgiant is a term used to describe a luminous star that is typically running out of hydrogen for nuclear fusion and is thus departing from the main sequence. These stars are classified as Yerkes luminosity class IV.
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