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2 Cassiopeiae
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Star 2 Cassiopeiae

Bright giant 2 Cassiopeiae is located 2741 light years away from the Sun. It is a single star of spectral class A4II, that has 530 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
2741 light years
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2 Cassiopeiae

Bright giant
Spectral class: A4II

Location +

Ascension iconRight ascension: 23h 9m 44.147s
Declination iconDeclination: 59° 19' 57.696'' (northern hemisphere)
Parallax iconParallax: 1.190
Distance iconSun distance: 2,740.694 ly | 840.3 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: 530 % M Sun
| 5552 M Jupiter
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Star mass
Mass of the star 2 Cassiopeiae is 5.3 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: 4100 % R Sun
| 408 R Jupiter
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Star size
Radius of the star 2 Cassiopeiae is 41 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: 8012 K | 1.39 T Sun
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Star temperature
Surface temperature of 2 Cassiopeiae is 8012 K, which is 139 % 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
luminosity icon
Luminosity: 3014 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): 5.7
Magnitude iconAbsolute magnitude (V): -3.9
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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2 Cassiopeiae system structure

 2 Cassiopeiae

More about 2 Cassiopeiae

Star 2 Cassiopeiae is is much bigger than the Sun and temperature on its surface is around 8012 K (7739 °C), which is about 139 % of Sun's temperature.
       2 Cassiopeiae 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
2 Cas, HR 8822, HD 218753, BD 58°2552, HIP 114365, Gaia DR3 2013693531246217088
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External sources
gaia icon
Gaia database (Gaia DR3 2013693531246217088)
Archive from the Gaia mission

Frequently Asked Questions

How far is the 2 Cassiopeiae system from the Sun?

The 2 Cassiopeiae system is 2741 light years or 840.3 parsecs from the Sun.

What galaxy is the 2 Cassiopeiae star in?

The 2 Cassiopeiae is in the Milky Way galaxy just like the Sun.

How many stars are in the 2 Cassiopeiae system?

The 2 Cassiopeiae is a single star, there are no other known stars in the system.

What type of star is the 2 Cassiopeiae?

The star 2 Cassiopeiae is a Bright giant star.

What temperature is star 2 Cassiopeiae?

The star 2 Cassiopeiae has an effective temperature of 8012 K. Find out more about the temperature of stars in Stellar guide
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