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Rho Cassiopeiae
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Star Rho Cassiopeiae

Yellow hypergiant Rho Cassiopeiae is located 3444 light years away from the Sun. It is a single star of spectral class G2Iae, that has 4000 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
3444 light years
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Rho Cassiopeiae

Yellow hypergiant
Spectral class: G2Iae

Location +

Ascension iconRight ascension: 23h 54m 23.000s
Declination iconDeclination: 57° 29' 58.000'' (northern hemisphere)
Parallax iconParallax: 0.947
Distance iconSun distance: 3,444.097 ly | 1,056.0 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: 4000 % M Sun
| 41903 M Jupiter
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Star mass
Mass of the star Rho Cassiopeiae is 40 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: 700 R Sun
(estimate)
temperature icon
Temperature: 5000 K | 0.87 T Sun
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Star temperature
Surface temperature of Rho Cassiopeiae is 5000 K, which is 87 % 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: 0.005 billions years | 0 Sun
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Star age
Star Rho Cassiopeiae is 0.005 billion years old, which is about 0 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: 400000 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
Magnitude iconAbsolute magnitude (V): 5
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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Rho Cassiopeiae system structure

 Rho Cassiopeiae

More about Rho Cassiopeiae

Star Rho Cassiopeiae is is much bigger than the Sun and temperature on its surface is around 5000 K (4727 °C), which is about 87 % of Sun's temperature.
       Rho 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
7 Cassiopeiae, HR 9045, BD+56°3111, HD 224014, SAO 35879, FK5 899, HIP 117863, GC 33160
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Frequently Asked Questions

How far is the Rho Cassiopeiae system from the Sun?

The Rho Cassiopeiae system is 3444 light years or 1,056.0 parsecs from the Sun.

What galaxy is the Rho Cassiopeiae star in?

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

How many stars are in the Rho Cassiopeiae system?

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

What type of star is the Rho Cassiopeiae?

The star Rho Cassiopeiae is a Yellow hypergiant star.

What temperature is star Rho Cassiopeiae?

The star Rho Cassiopeiae has an effective temperature of 5000 K. Find out more about the temperature of stars in Stellar guide
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