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Alpha Ceti
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Star Alpha Ceti

Red giant Alpha Ceti is located 249 light years away from the Sun. It is a single star of spectral class M1.5IIIa B, that has 230 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
249 light years
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Alpha Ceti

Red giant
Spectral class: M1.5IIIa B

Location +

Ascension iconRight ascension: 3h 2m 16.773s
Declination iconDeclination: 4° 5' 23.060'' (equatorial region)
Parallax iconParallax: 13.090
Distance iconSun distance: 249.164 ly | 76.4 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: 230 % M Sun
| 2409 M Jupiter
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Star mass
Mass of the star Alpha Ceti is 2.3 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: 8900 % R Sun
| 885.7 R Jupiter
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Star size
Radius of the star Alpha Ceti is 89 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: 3795 K | 0.66 T Sun
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Star temperature
Surface temperature of Alpha Ceti is 3795 K, which is 66 % 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: 1455 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): 2.5
Magnitude iconAbsolute magnitude (V): -1.9
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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Alpha Ceti system structure

 Alpha Ceti

More about Alpha Ceti

Star Alpha Ceti is is much bigger than the Sun and temperature on its surface is around 3795 K (3522 °C), which is about 66 % of Sun's temperature.
       Alpha Ceti 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
Menkar, 92 Ceti, HR 911, BD+03°419, HD 18884, SAO 110920, FK5 107, HIP 14135, 2MASS J03021680+0405226, TIC 328228602, TYC 58-1618-1, N30 623
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Frequently Asked Questions

How far is the Alpha Ceti system from the Sun?

The Alpha Ceti system is 249 light years or 76.4 parsecs from the Sun.

What galaxy is the Alpha Ceti star in?

The Alpha Ceti is in the Milky Way galaxy just like the Sun.

How many stars are in the Alpha Ceti system?

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

What type of star is the Alpha Ceti?

The star Alpha Ceti is a Red giant star.

What temperature is star Alpha Ceti?

The star Alpha Ceti has an effective temperature of 3795 K. Find out more about the temperature of stars in Stellar guide
Class of stars Red giant
White dwarfs are the hot, extremely dense stellar remnants left behind by stars that originally had masses between about 0.5 and 8 times the mass of the Sun during their main sequence lifetimes. After exhausting their nuclear fuel, these stars shed their outer layers and leave behind a compact core. Although white dwarfs contain between roughly 0.2 and 1.44 solar masses, this mass is packed into a volume comparable to that of an Earth-sized planet, making them some of the densest objects in the Universe.
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