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EX Ceti
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Star EX Ceti

Orange star EX Ceti is located 78 light years away from the Sun. It is a single star of spectral class K0/1V, that has 86 % of solar mass. For now, there are no known exoplanets in this star system.
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Sun distance
78 light years
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EX Ceti

Orange star, BY Draconis variable
Spectral class: K0/1V

Location +

Ascension iconRight ascension: 1h 37m 35.657s
Declination iconDeclination: -6° 45' 39.100'' (equatorial region)
Parallax iconParallax: 41.564
Distance iconSun distance: 78.472 ly | 24.1 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: 86 % M Sun
| 901 M Jupiter
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Star mass
Mass of the star EX Ceti is 0.86 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: 80 % R Sun
| 8 R Jupiter
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Star size
Radius of the star EX Ceti is 0.8 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: 5303 K | 0.92 T Sun
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Star temperature
Surface temperature of EX Ceti is 5303 K, which is 92 % 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: 0.44 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): 7.7
Magnitude iconAbsolute magnitude (V): 5.8
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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EX Ceti system structure

 EX Ceti

More about EX Ceti

Nearby star EX Ceti is a main sequence star that fuses hydrogen atoms into helium. It is approximately 80 % of the size of Sun and temperature on its surface is around 5303 K (5030 °C), which is about 92 % of Sun's temperature.
      a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface. EX Ceti can be found in southern celestial hemisphere, you cannot see it with naked eye, but you can observe this star with basic telescope. The star is also observable from Northern America, Europe and Asia. 

      EX Ceti is a BY Draconis variable. Stars from this category exhibit periodic variations in their luminosity. The variability is caused by a rotation which shows and hides starspots on the surface.
Other designations of this star
HD 10008, HIP 7576, SAO 129411, BD-07 268, EX Cet, Gaia EDR3 2477815222028038272
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External sources
simbad icon
Simbad database (V* EX Cet)
Astronomical database SIMBAD (the Set of Identifications, Measurements and Bibliography for Astronomical Data)
gaia icon
Gaia database (Gaia EDR3 2477815222028038272)
Archive from the Gaia mission

Frequently Asked Questions

How far is the EX Ceti system from the Sun?

The EX Ceti system is 78 light years or 24.1 parsecs from the Sun.

What galaxy is the EX Ceti star in?

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

How many stars are in the EX Ceti system?

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

What type of star is the EX Ceti?

The star EX Ceti is a Orange star star.

What temperature is star EX Ceti?

The star EX Ceti has an effective temperature of 5303 K. Find out more about the temperature of stars in Stellar guide
Possible companions

 G 271-110
 - 0.3 ly
Closest stars

 G 271-149
 - 6.4 ly

Chi Ceti
 - 6.9 ly

G 271-122
 - 7.7 ly

37 Ceti
 - 8 ly

G 272-34
 - 8.7 ly
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exoplanet iconAbout Stellar Catalog

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