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Beta Ceti
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Star Beta Ceti

Yellow giant Beta Ceti is located 96 light years away from the Sun. It is a single star of spectral class G9.5IIICH-1, that has 350 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
96 light years
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Beta Ceti

Yellow giant, High proper motion star
Spectral class: G9.5IIICH-1

Location +

Ascension iconRight ascension: 0h 43m 35.377s
Declination iconDeclination: -17° 59' 11.783'' (equatorial region)
Parallax iconParallax: 33.860
Distance iconSun distance: 96.325 ly | 29.5 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: 350 % M Sun
| 3666 M Jupiter
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Star mass
Mass of the star Beta Ceti is 3.5 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: 1752 % R Sun
| 174.3 R Jupiter
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Star size
Radius of the star Beta Ceti is 17.52 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: 4792 K | 0.83 T Sun
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Star temperature
Surface temperature of Beta Ceti is 4792 K, which is 83 % 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: 0.46 billions years | 0.1 Sun
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Star age
Star Beta Ceti is 0.46 billion years old, which is about 0.1 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: 149.7 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
Magnitude iconAbsolute magnitude (V): -0.3
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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Beta Ceti system structure

 Beta Ceti

More about Beta Ceti

Nearby star Beta Ceti is is approximately 18 times bigger than the Sun and temperature on its surface is around 4792 K (4519 °C), which is about 83 % of Sun's temperature.
       Beta Ceti can be found in southern celestial hemisphere, and it is possible to see it with naked eye. The star is also observable from Northern America, Europe and Asia.
Other designations of this star
bet Cet, Diphda, Deneb Kaitos, β Cet, 16 Cet, BD−18 115, GJ 31, HD 4128, HIP 3419, HR 188, SAO 147420, PLX 134.00
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External sources
simbad icon
Simbad database (* bet Cet)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)

Frequently Asked Questions

How far is the Beta Ceti system from the Sun?

The Beta Ceti system is 96 light years or 29.5 parsecs from the Sun.

What galaxy is the Beta Ceti star in?

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

How many stars are in the Beta Ceti system?

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

What type of star is the Beta Ceti?

The star Beta Ceti is a Yellow giant star.

What temperature is star Beta Ceti?

The star Beta Ceti has an effective temperature of 4792 K. Find out more about the temperature of stars in Stellar guide
Closest stars

 LP 765-49
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2MASS J00500971-2008427
 - 7.7 ly

LP 826-143
 - 9.8 ly

HD 4247
 1.5 M☉ 10.1 ly

HD 3795
 - 10.2 ly
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